Every CVE Search/ Get API key

CVE-2026-32665

Remote DNS-over-QUIC denial of service due to `quic-size` budget bypass

7.5 HighFix available

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC connection (stream_id 0 and 4) bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte length prefix has been received from the initial streams. As a result, a remote client can make Unbound exceed the configured 'quic-size' limit with low-cost input. Using only one connection and two streams, each sending a declared 65535-byte length prefix and then holding the streams open, a client can already trivially make Unbound roughly allocate double that amount. This is a remote availability issue / memory-accounting bypass in the downstream DoQ implementation that leads to denial of service for new DoQ clients. This vulnerability needs Unbound to be compiled with DoQ support ('--with-libngtcp2') and the 'quic-port' to be configured for the listening interfaces.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.29%Down 0.2 points since Jul 23, 2026
90%50%10%1%

What each source reports

CVE List Score used 7.5

Remote DNS-over-QUIC denial of service due to `quic-size` budget bypass

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC connection (stream_id 0 and 4) bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte length prefix has been received from the initial streams. As a result, a remote client can make Unbound exceed the configured 'quic-size' limit with low-cost input. Using only one connection and two streams, each sending a declared 65535-byte length prefix and then holding the streams open, a client can already trivially make Unbound roughly allocate double that amount. This is a remote availability issue / memory-accounting bypass in the downstream DoQ implementation that leads to denial of service for new DoQ clients. This vulnerability needs Unbound to be compiled with DoQ support ('--with-libngtcp2') and the 'quic-port' to be configured for the listening interfaces.

Record
CVE-2026-32665
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-1284
Updated
2026-11-02
EUVDEUVD-2026-47663 7.5

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC connection (stream_id 0 and 4) bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte length prefix has been received from the initial streams. As a result, a remote client can make Unbound exceed the configured 'quic-size' limit with low-cost input. Using only one connection and two streams, each sending a declared 65535-byte length prefix and then holding the streams open, a client can already trivially make Unbound roughly allocate double that amount. This is a remote availability issue / memory-accounting bypass in the downstream DoQ implementation that leads to denial of service for new DoQ clients. This vulnerability needs Unbound to be compiled with DoQ support ('--with-libngtcp2') and the 'quic-port' to be configured for the listening interfaces.

Record
EUVD-2026-47663
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-v3cq-93xf-4p42 7.5

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is...

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC connection (stream_id 0 and 4) bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte length prefix has been received from the initial streams. As a result, a remote client can make Unbound exceed the configured 'quic-size' limit with low-cost input. Using only one connection and two streams, each sending a declared 65535-byte length prefix and then holding the streams open, a client can already trivially make Unbound roughly allocate double that amount. This is a remote availability issue / memory-accounting bypass in the downstream DoQ implementation that leads to denial of service for new DoQ clients. This vulnerability needs Unbound to be compiled with DoQ support ('--with-libngtcp2') and the 'quic-port' to be configured for the listening interfaces.

Record
GHSA-v3cq-93xf-4p42
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-1284
Updated
2026-11-02
NVD 7.5

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC connection (stream_id 0 and 4) bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte length prefix has been received from the initial streams. As a result, a remote client can make Unbound exceed the configured 'quic-size' limit with low-cost input. Using only one connection and two streams, each sending a declared 65535-byte length prefix and then holding the streams open, a client can already trivially make Unbound roughly allocate double that amount. This is a remote availability issue / memory-accounting bypass in the downstream DoQ implementation that leads to denial of service for new DoQ clients. This vulnerability needs Unbound to be compiled with DoQ support ('--with-libngtcp2') and the 'quic-port' to be configured for the listening interfaces.

Record
CVE-2026-32665
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-1284
Updated
2026-11-02
OSV 7.5

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC connection (stream_id 0 and 4) bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte length prefix has been received from the initial streams. As a result, a remote client can make Unbound exceed the configured 'quic-size' limit with low-cost input. Using only one connection and two streams, each sending a declared 65535-byte length prefix and then holding the streams open, a client can already trivially make Unbound roughly allocate double that amount. This is a remote availability issue / memory-accounting bypass in the downstream DoQ implementation that leads to denial of service for new DoQ clients. This vulnerability needs Unbound to be compiled with DoQ support ('--with-libngtcp2') and the 'quic-port' to be configured for the listening interfaces.

Record
CVE-2026-32665
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2026-32665 7.5

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC connection (stream_id 0 and 4) bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte length prefix has been received from the initial streams. As a result, a remote client can make Unbound exceed the configured 'quic-size' limit with low-cost input. Using only one connection and two streams, each sending a declared 65535-byte length prefix and then holding the streams open, a client can already trivially make Unbound roughly allocate double that amount. This is a remote availability issue / memory-accounting bypass in the downstream DoQ implementation that leads to denial of service for new DoQ clients. This vulnerability needs Unbound to be compiled with DoQ support ('--with-libngtcp2') and the 'quic-port' to be configured for the listening interfaces.

Record
DEBIAN-CVE-2026-32665
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 16 moreShow less
OSVRHSA-2026:43588 8.6

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Record
RHSA-2026:43588
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2026-32665 7.5

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC connection (stream_id 0 and 4) bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte length prefix has been received from the initial streams. As a result, a remote client can make Unbound exceed the configured 'quic-size' limit with low-cost input. Using only one connection and two streams, each sending a declared 65535-byte length prefix and then holding the streams open, a client can already trivially make Unbound roughly allocate double that amount. This is a remote availability issue / memory-accounting bypass in the downstream DoQ implementation that leads to denial of service for new DoQ clients. This vulnerability needs Unbound to be compiled with DoQ support ('--with-libngtcp2') and the 'quic-port' to be configured for the listening interfaces.

Record
UBUNTU-CVE-2026-32665
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-92952 No score

CVE-2026-32665 affecting package unbound for versions less than 1.25.2-1

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC connection (stream_id 0 and 4) bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte length prefix has been received from the initial streams. As a result, a remote client can make Unbound exceed the configured 'quic-size' limit with low-cost input. Using only one connection and two streams, each sending a declared 65535-byte length prefix and then holding the streams open, a client can already trivially make Unbound roughly allocate double that amount. This is a remote availability issue / memory-accounting bypass in the downstream DoQ implementation that leads to denial of service for new DoQ clients. This vulnerability needs Unbound to be compiled with DoQ support ('--with-libngtcp2') and the 'quic-port' to be configured for the listening interfaces.

Record
AZL-92952
Updated
2026-11-02
OSVMGASA-2026-0316 No score

Updated unbound packages fix security vulnerabilities

Unbound packages updated to version 1.25.2 which incorporates a number of security and bug fixes.

Record
MGASA-2026-0316
Updated
2026-11-02
OSVMGASA-2026-0451 No score

Updated unbound packages fixes security vulnerabilities

Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY Possible heap buffer overflow during DNSSEC canonicalization CNAME synthesis could lead to heap corruption Possible ZONEMD verification bypass window Use-after-free in DoQ stream output buffer on reset re-transmission Possible degradation of service from continuous queries on the same TCP/DoT connection Use-after-free in DoH stream cleanup code path Retrap: Novel Vulnerabilities to launch Algorithmic Complexity Attacks on DNSSEC 'serve-expired' can bypass Unbound 'wait-limit' Remote DNS-over-QUIC denial of service due to 'quic-size' budget bypass Packet of death for DNSCrypt over TCP Cross-zone wildcard cache poisoning via RRSIG.labels manipulation 'dns-error-reporting: yes' leads to stack buffer overflow Assertion in libngtcp2 when under pressure in high concurrency DNS-over-QUIC environments Libunbound applications configured with 'unwanted-reply-threshold' could eventually be abruptly terminated 'max-global-quota' reset by DNSSEC validation restarts Possible heap use-after-free in an error path when a DoT forwarded query is jostled out 'response-ip'/'rpz' can rewrite BOGUS answers instead of returning SERVFAIL BOGUS configured primary hostname accepted for XFR in auth/rpz zones Date: Attacker supplied '0.0.0.0'/'::' glue triggers defensive full-cache flush Possible cache poisoning attack by mapping source port population per thread Memory corruption could lead to crash and denial of service 'serve-expired-client-timeout' and 'response-ip' CNAME redirect could lead to a crash Packet of death for a DNSCrypt misconfigured Unbound Remote DNS-over-QUIC (DoQ) flow-control assertion failure in libngtcp2 Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name Degradation of resolution service when 'discard-timeout' and 'serve-expired-client-timeout' are combined in unusual configuration Degradation of resolution service from improperly accounted client-terminated DNS-over-QUIC queries Extra fix for CVE-2026-40622 to also clamp the TTL of A/AAAA records disallowing a one-time 'ghost domain' delegation renewal via glue records Off-by-one error in 'harden-below-nxdomain' logic can shadow a stub/forward zone by a legitimate parent's NXDOMAIN A wildcard replay, as another piece of data, triggers poisoning in the serve expired reply path DNS Cookie bypass when combined with proxy-protocol use Privacy/configuration issue when adding local data in views through 'unbound-control' Possible arbitrary code execution during DNSSEC validation Heap overflow with multiple NSID, COOKIE, PADDING EDNS options Crash during DNSSEC validation of malicious content Date: Packet of death with DNSCrypt Another "ghost domain names" attack variant Long list of incoming EDNS options degrades performance Jostle logic bypass degrades resolution performance Degradation of service with unbounded NSEC3 hash calculations Possible cache poisoning via promiscuous records for the authority section Unbounded name compression in certain cases causes degradation of service Use after free and crash under special conditions in RPZ code Possible domain hijacking via promiscuous records in the authority section Cache poisoning via the ECS-enabled Rebirthday Attack Unbounded name compression could lead to Denial of Service Unbound vulnerable to the "DNSBomb" pulsing DoS amplification attack Denial of service when trimming EDE text on positive replies DNSSEC verification complexity can be exploited to exhaust CPU resources and stall DNS resolvers NSEC3 closest encloser proof can exhaust CPU Non-Responsive Delegation Attack Novel "ghost domain names" attack by updating almost expired delegation information Novel "ghost domain names" attack by introducing subdomain delegations Local symlink attack Vulnerability in Domain Parse NXNSAttack Vulnerability in IPSEC module Vulnerability in parsing NOTIFY queries Vulnerability in the processing of wildcard synthesized NSEC…

Record
MGASA-2026-0451
Updated
2026-11-02
OSVopenSUSE-SU-2026:11380-1 No score

libunbound8-1.25.2-1.1 on GA media

These are all security issues fixed in the libunbound8-1.25.2-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:11380-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:21550-1 No score

Security update for unbound

This update for unbound fixes the following issues:

Update to version 1.25.2.

Security issues fixed:

  • CVE-2026-14586: DoS via assertion in libngtcp2 for DNS-over-QUIC environments with high concurrency (bsc#1271879).
  • CVE-2026-32665: Remote DNS-over-QUIC denial of service due to quic-size budget bypass (bsc#1271873).
  • CVE-2026-40691: DoS due to heap overflow via single bad DNSCrypt query over TCP (bsc#1271875).
  • CVE-2026-41637: Degradation of resolution service due to improperly accounted client-terminated DNS-over-QUIC queries (bsc#1271891).
  • CVE-2026-42955: Ghost domain window can be extended by up to one cached TTL configured value for A/AAAA glue records (bsc#1271892).
  • CVE-2026-44621: Libunbound applications configured with unwanted-reply-threshold could eventually be abruptly terminated (bsc#1271876).
  • CVE-2026-44687: Off-by-one error in harden-below-nxdomain logic can shadow a stub/forward zone by a legitimate parent's NXDOMAIN (bsc#1271893).
  • CVE-2026-44690: Cross-zone wildcard cache poisoning via RRSIG.labels manipulation (bsc#1271877).
  • CVE-2026-46582: Replay of a wildcard rrset as another piece of data triggers poisoning in the server expired reply path (bsc#1271894).
  • CVE-2026-50045: max-global-quota bypass via single client queries for a deeply nested name under a DNSSEC-signed parent (bsc#1271878).
  • CVE-2026-50046: Possible heap use-after-free in an error path when a DoT forwarded query is jostled out (bsc#1271882).
  • CVE-2026-50243: response-ip/rpz can rewrite BOGUS answers instead of returning SERVFAIL (bsc#1271880).
  • CVE-2026-50248: BOGUS configured primary hostname accepted for XFR in auth/rpz zones (bsc#1271881).
  • CVE-2026-50251: Attacker supplied 0.0.0.0/:: glue triggers defensive full-cache flush (bsc#1271883).
  • CVE-2026-50252: Possible cache poisoning attack by mapping source port population per thread (bsc#1271884).
  • CVE-2026-54478: DNS Cookie bypass when proxy-protocol with with answer-cookie:yes is used (bsc#1271895).
  • CVE-2026-55708: Privacy/configuration issue when adding local data in views through unbound-control (bsc#1271896).
  • CVE-2026-55717: serve-expired-client-timeout and response-ip CNAME redirect could lead to a crash (bsc#1271886).
  • CVE-2026-55973: DoS due to stack overflow triggered crash when dns-error-reporting: yes is set (bsc#1271874).
  • CVE-2026-55990: Crash via crafted client UDP query due to DNSCrypt faulty configuration (bsc#1271887).
  • CVE-2026-55991: Remote DNS-over-QUIC (DoQ) flow-control reacheable assertion failure in libngtcp2 (bsc#1271888).
  • CVE-2026-56416: Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name (bsc#1271889).
  • CVE-2026-56444: Degradation of resolution service when discard-timeout and serve-expired-client-timeout are combined in unusual configuration (bsc#1271890).

Other updates and bugfixes:

  • Version 1.25.2:
    • Features:
      • TTL behavior changes: cached records reaching TTL 0 are expired; TTL 0 upstream answers are no longer cached by cachedb; serve-expired-reply-ttl is now capped by the original TTL value; TTL decoding updated to adhere to RFC 8767 section 4
      • Add new statistics: num.queries.replyaddr_limit and requestlist.current.replies
      • Add 'log-thread-id' configuration option to log the system-wide Linux thread ID for easier debugging
      • Add ECC-GOST12 support per RFC 9558 (available as contrib/gost12.patch)
      • Allow synthesized DNAME TTL=0 to be served from cache within a 1-second grace period, reducing recursion for TTL=0 DNAMEs (RFC 2308)
      • Fix DoT/DoH/DoQ to reload certificates on config reload without requiring a full restart; fast_reload now supports changes to tls-service-key, tls-service-pem and tls-cert-bundle
      • Allow ip@port notation in control-interface configuration
      • Add iter-scrub-rrsig option (default: 8) to limit the number of …
Record
openSUSE-SU-2026:21550-1
Updated
2026-11-02
OSVROOT-OS-DEBIAN-11-CVE-2026-32665 No score

CVE-2026-32665 in unbound - Patched by Root

Root has patched CVE-2026-32665 in the unbound package for Root:Debian:11. Multiple fixed versions available.

Record
ROOT-OS-DEBIAN-11-CVE-2026-32665
Updated
2026-11-02
OSVROOT-OS-DEBIAN-12-CVE-2026-32665 No score

CVE-2026-32665 in unbound - Patched by Root

Root has patched CVE-2026-32665 in the unbound package for Root:Debian:12. Multiple fixed versions available.

Record
ROOT-OS-DEBIAN-12-CVE-2026-32665
Updated
2026-11-02
OSVROOT-OS-DEBIAN-13-CVE-2026-32665 No score

CVE-2026-32665 in unbound - Patched by Root

Root has patched CVE-2026-32665 in the unbound package for Root:Debian:13. Multiple fixed versions available.

Record
ROOT-OS-DEBIAN-13-CVE-2026-32665
Updated
2026-11-02
OSVSUSE-SU-2026:23050-1 No score

Security update for unbound

This update for unbound fixes the following issues:

Update to version 1.25.2.

Security issues fixed:

  • CVE-2026-14586: DoS via assertion in libngtcp2 for DNS-over-QUIC environments with high concurrency (bsc#1271879).
  • CVE-2026-32665: Remote DNS-over-QUIC denial of service due to quic-size budget bypass (bsc#1271873).
  • CVE-2026-40691: DoS due to heap overflow via single bad DNSCrypt query over TCP (bsc#1271875).
  • CVE-2026-41637: Degradation of resolution service due to improperly accounted client-terminated DNS-over-QUIC queries (bsc#1271891).
  • CVE-2026-42955: Ghost domain window can be extended by up to one cached TTL configured value for A/AAAA glue records (bsc#1271892).
  • CVE-2026-44621: Libunbound applications configured with unwanted-reply-threshold could eventually be abruptly terminated (bsc#1271876).
  • CVE-2026-44687: Off-by-one error in harden-below-nxdomain logic can shadow a stub/forward zone by a legitimate parent's NXDOMAIN (bsc#1271893).
  • CVE-2026-44690: Cross-zone wildcard cache poisoning via RRSIG.labels manipulation (bsc#1271877).
  • CVE-2026-46582: Replay of a wildcard rrset as another piece of data triggers poisoning in the server expired reply path (bsc#1271894).
  • CVE-2026-50045: max-global-quota bypass via single client queries for a deeply nested name under a DNSSEC-signed parent (bsc#1271878).
  • CVE-2026-50046: Possible heap use-after-free in an error path when a DoT forwarded query is jostled out (bsc#1271882).
  • CVE-2026-50243: response-ip/rpz can rewrite BOGUS answers instead of returning SERVFAIL (bsc#1271880).
  • CVE-2026-50248: BOGUS configured primary hostname accepted for XFR in auth/rpz zones (bsc#1271881).
  • CVE-2026-50251: Attacker supplied 0.0.0.0/:: glue triggers defensive full-cache flush (bsc#1271883).
  • CVE-2026-50252: Possible cache poisoning attack by mapping source port population per thread (bsc#1271884).
  • CVE-2026-54478: DNS Cookie bypass when proxy-protocol with with answer-cookie:yes is used (bsc#1271895).
  • CVE-2026-55708: Privacy/configuration issue when adding local data in views through unbound-control (bsc#1271896).
  • CVE-2026-55717: serve-expired-client-timeout and response-ip CNAME redirect could lead to a crash (bsc#1271886).
  • CVE-2026-55973: DoS due to stack overflow triggered crash when dns-error-reporting: yes is set (bsc#1271874).
  • CVE-2026-55990: Crash via crafted client UDP query due to DNSCrypt faulty configuration (bsc#1271887).
  • CVE-2026-55991: Remote DNS-over-QUIC (DoQ) flow-control reacheable assertion failure in libngtcp2 (bsc#1271888).
  • CVE-2026-56416: Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name (bsc#1271889).
  • CVE-2026-56444: Degradation of resolution service when discard-timeout and serve-expired-client-timeout are combined in unusual configuration (bsc#1271890).

Other updates and bugfixes:

  • Version 1.25.2:
    • Features:
      • TTL behavior changes: cached records reaching TTL 0 are expired; TTL 0 upstream answers are no longer cached by cachedb; serve-expired-reply-ttl is now capped by the original TTL value; TTL decoding updated to adhere to RFC 8767 section 4
      • Add new statistics: num.queries.replyaddr_limit and requestlist.current.replies
      • Add 'log-thread-id' configuration option to log the system-wide Linux thread ID for easier debugging
      • Add ECC-GOST12 support per RFC 9558 (available as contrib/gost12.patch)
      • Allow synthesized DNAME TTL=0 to be served from cache within a 1-second grace period, reducing recursion for TTL=0 DNAMEs (RFC 2308)
      • Fix DoT/DoH/DoQ to reload certificates on config reload without requiring a full restart; fast_reload now supports changes to tls-service-key, tls-service-pem and tls-cert-bundle
      • Allow ip@port notation in control-interface configuration
      • Add iter-scrub-rrsig option (default: 8) to limit the number of …
Record
SUSE-SU-2026:23050-1
Updated
2026-11-02
OSVSUSE-SU-2026:23215-1 No score

Security update for unbound

This update for unbound fixes the following issues:

Update to version 1.25.2.

Security issues fixed:

  • CVE-2026-14586: DoS via assertion in libngtcp2 for DNS-over-QUIC environments with high concurrency (bsc#1271879).
  • CVE-2026-32665: Remote DNS-over-QUIC denial of service due to quic-size budget bypass (bsc#1271873).
  • CVE-2026-40691: DoS due to heap overflow via single bad DNSCrypt query over TCP (bsc#1271875).
  • CVE-2026-41637: Degradation of resolution service due to improperly accounted client-terminated DNS-over-QUIC queries (bsc#1271891).
  • CVE-2026-42955: Ghost domain window can be extended by up to one cached TTL configured value for A/AAAA glue records (bsc#1271892).
  • CVE-2026-44621: Libunbound applications configured with unwanted-reply-threshold could eventually be abruptly terminated (bsc#1271876).
  • CVE-2026-44687: Off-by-one error in harden-below-nxdomain logic can shadow a stub/forward zone by a legitimate parent's NXDOMAIN (bsc#1271893).
  • CVE-2026-44690: Cross-zone wildcard cache poisoning via RRSIG.labels manipulation (bsc#1271877).
  • CVE-2026-46582: Replay of a wildcard rrset as another piece of data triggers poisoning in the server expired reply path (bsc#1271894).
  • CVE-2026-50045: max-global-quota bypass via single client queries for a deeply nested name under a DNSSEC-signed parent (bsc#1271878).
  • CVE-2026-50046: Possible heap use-after-free in an error path when a DoT forwarded query is jostled out (bsc#1271882).
  • CVE-2026-50243: response-ip/rpz can rewrite BOGUS answers instead of returning SERVFAIL (bsc#1271880).
  • CVE-2026-50248: BOGUS configured primary hostname accepted for XFR in auth/rpz zones (bsc#1271881).
  • CVE-2026-50251: Attacker supplied 0.0.0.0/:: glue triggers defensive full-cache flush (bsc#1271883).
  • CVE-2026-50252: Possible cache poisoning attack by mapping source port population per thread (bsc#1271884).
  • CVE-2026-54478: DNS Cookie bypass when proxy-protocol with with answer-cookie:yes is used (bsc#1271895).
  • CVE-2026-55708: Privacy/configuration issue when adding local data in views through unbound-control (bsc#1271896).
  • CVE-2026-55717: serve-expired-client-timeout and response-ip CNAME redirect could lead to a crash (bsc#1271886).
  • CVE-2026-55973: DoS due to stack overflow triggered crash when dns-error-reporting: yes is set (bsc#1271874).
  • CVE-2026-55990: Crash via crafted client UDP query due to DNSCrypt faulty configuration (bsc#1271887).
  • CVE-2026-55991: Remote DNS-over-QUIC (DoQ) flow-control reacheable assertion failure in libngtcp2 (bsc#1271888).
  • CVE-2026-56416: Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name (bsc#1271889).
  • CVE-2026-56444: Degradation of resolution service when discard-timeout and serve-expired-client-timeout are combined in unusual configuration (bsc#1271890).

Other updates and bugfixes:

  • Version 1.25.2:
    • Features:
      • TTL behavior changes: cached records reaching TTL 0 are expired; TTL 0 upstream answers are no longer cached by cachedb; serve-expired-reply-ttl is now capped by the original TTL value; TTL decoding updated to adhere to RFC 8767 section 4
      • Add new statistics: num.queries.replyaddr_limit and requestlist.current.replies
      • Add 'log-thread-id' configuration option to log the system-wide Linux thread ID for easier debugging
      • Add ECC-GOST12 support per RFC 9558 (available as contrib/gost12.patch)
      • Allow synthesized DNAME TTL=0 to be served from cache within a 1-second grace period, reducing recursion for TTL=0 DNAMEs (RFC 2308)
      • Fix DoT/DoH/DoQ to reload certificates on config reload without requiring a full restart; fast_reload now supports changes to tls-service-key, tls-service-pem and tls-cert-bundle
      • Allow ip@port notation in control-interface configuration
      • Add iter-scrub-rrsig option (default: 8) to limit the number of …
Record
SUSE-SU-2026:23215-1
Updated
2026-11-02
OSVSUSE-SU-2026:23226-1 No score

Security update for unbound

This update for unbound fixes the following issues:

Update to version 1.25.2.

Security issues fixed:

  • CVE-2026-14586: DoS via assertion in libngtcp2 for DNS-over-QUIC environments with high concurrency (bsc#1271879).
  • CVE-2026-32665: Remote DNS-over-QUIC denial of service due to quic-size budget bypass (bsc#1271873).
  • CVE-2026-40691: DoS due to heap overflow via single bad DNSCrypt query over TCP (bsc#1271875).
  • CVE-2026-41637: Degradation of resolution service due to improperly accounted client-terminated DNS-over-QUIC queries (bsc#1271891).
  • CVE-2026-42955: Ghost domain window can be extended by up to one cached TTL configured value for A/AAAA glue records (bsc#1271892).
  • CVE-2026-44621: Libunbound applications configured with unwanted-reply-threshold could eventually be abruptly terminated (bsc#1271876).
  • CVE-2026-44687: Off-by-one error in harden-below-nxdomain logic can shadow a stub/forward zone by a legitimate parent's NXDOMAIN (bsc#1271893).
  • CVE-2026-44690: Cross-zone wildcard cache poisoning via RRSIG.labels manipulation (bsc#1271877).
  • CVE-2026-46582: Replay of a wildcard rrset as another piece of data triggers poisoning in the server expired reply path (bsc#1271894).
  • CVE-2026-50045: max-global-quota bypass via single client queries for a deeply nested name under a DNSSEC-signed parent (bsc#1271878).
  • CVE-2026-50046: Possible heap use-after-free in an error path when a DoT forwarded query is jostled out (bsc#1271882).
  • CVE-2026-50243: response-ip/rpz can rewrite BOGUS answers instead of returning SERVFAIL (bsc#1271880).
  • CVE-2026-50248: BOGUS configured primary hostname accepted for XFR in auth/rpz zones (bsc#1271881).
  • CVE-2026-50251: Attacker supplied 0.0.0.0/:: glue triggers defensive full-cache flush (bsc#1271883).
  • CVE-2026-50252: Possible cache poisoning attack by mapping source port population per thread (bsc#1271884).
  • CVE-2026-54478: DNS Cookie bypass when proxy-protocol with with answer-cookie:yes is used (bsc#1271895).
  • CVE-2026-55708: Privacy/configuration issue when adding local data in views through unbound-control (bsc#1271896).
  • CVE-2026-55717: serve-expired-client-timeout and response-ip CNAME redirect could lead to a crash (bsc#1271886).
  • CVE-2026-55973: DoS due to stack overflow triggered crash when dns-error-reporting: yes is set (bsc#1271874).
  • CVE-2026-55990: Crash via crafted client UDP query due to DNSCrypt faulty configuration (bsc#1271887).
  • CVE-2026-55991: Remote DNS-over-QUIC (DoQ) flow-control reacheable assertion failure in libngtcp2 (bsc#1271888).
  • CVE-2026-56416: Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name (bsc#1271889).
  • CVE-2026-56444: Degradation of resolution service when discard-timeout and serve-expired-client-timeout are combined in unusual configuration (bsc#1271890).

Other updates and bugfixes:

  • Version 1.25.2:
    • Features:
      • TTL behavior changes: cached records reaching TTL 0 are expired; TTL 0 upstream answers are no longer cached by cachedb; serve-expired-reply-ttl is now capped by the original TTL value; TTL decoding updated to adhere to RFC 8767 section 4
      • Add new statistics: num.queries.replyaddr_limit and requestlist.current.replies
      • Add 'log-thread-id' configuration option to log the system-wide Linux thread ID for easier debugging
      • Add ECC-GOST12 support per RFC 9558 (available as contrib/gost12.patch)
      • Allow synthesized DNAME TTL=0 to be served from cache within a 1-second grace period, reducing recursion for TTL=0 DNAMEs (RFC 2308)
      • Fix DoT/DoH/DoQ to reload certificates on config reload without requiring a full restart; fast_reload now supports changes to tls-service-key, tls-service-pem and tls-cert-bundle
      • Allow ip@port notation in control-interface configuration
      • Add iter-scrub-rrsig option (default: 8) to limit the number of …
Record
SUSE-SU-2026:23226-1
Updated
2026-11-02
OSVSUSE-SU-2026:23349-1 No score

Security update for unbound

This update for unbound fixes the following issues:

Update to version 1.25.2.

Security issues fixed:

  • CVE-2026-14586: DoS via assertion in libngtcp2 for DNS-over-QUIC environments with high concurrency (bsc#1271879).
  • CVE-2026-32665: Remote DNS-over-QUIC denial of service due to quic-size budget bypass (bsc#1271873).
  • CVE-2026-40691: DoS due to heap overflow via single bad DNSCrypt query over TCP (bsc#1271875).
  • CVE-2026-41637: Degradation of resolution service due to improperly accounted client-terminated DNS-over-QUIC queries (bsc#1271891).
  • CVE-2026-42955: Ghost domain window can be extended by up to one cached TTL configured value for A/AAAA glue records (bsc#1271892).
  • CVE-2026-44621: Libunbound applications configured with unwanted-reply-threshold could eventually be abruptly terminated (bsc#1271876).
  • CVE-2026-44687: Off-by-one error in harden-below-nxdomain logic can shadow a stub/forward zone by a legitimate parent's NXDOMAIN (bsc#1271893).
  • CVE-2026-44690: Cross-zone wildcard cache poisoning via RRSIG.labels manipulation (bsc#1271877).
  • CVE-2026-46582: Replay of a wildcard rrset as another piece of data triggers poisoning in the server expired reply path (bsc#1271894).
  • CVE-2026-50045: max-global-quota bypass via single client queries for a deeply nested name under a DNSSEC-signed parent (bsc#1271878).
  • CVE-2026-50046: Possible heap use-after-free in an error path when a DoT forwarded query is jostled out (bsc#1271882).
  • CVE-2026-50243: response-ip/rpz can rewrite BOGUS answers instead of returning SERVFAIL (bsc#1271880).
  • CVE-2026-50248: BOGUS configured primary hostname accepted for XFR in auth/rpz zones (bsc#1271881).
  • CVE-2026-50251: Attacker supplied 0.0.0.0/:: glue triggers defensive full-cache flush (bsc#1271883).
  • CVE-2026-50252: Possible cache poisoning attack by mapping source port population per thread (bsc#1271884).
  • CVE-2026-54478: DNS Cookie bypass when proxy-protocol with with answer-cookie:yes is used (bsc#1271895).
  • CVE-2026-55708: Privacy/configuration issue when adding local data in views through unbound-control (bsc#1271896).
  • CVE-2026-55717: serve-expired-client-timeout and response-ip CNAME redirect could lead to a crash (bsc#1271886).
  • CVE-2026-55990: Crash via crafted client UDP query due to DNSCrypt faulty configuration (bsc#1271887).
  • CVE-2026-55991: Remote DNS-over-QUIC (DoQ) flow-control reacheable assertion failure in libngtcp2 (bsc#1271888).
  • CVE-2026-56416: Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name (bsc#1271889).
  • CVE-2026-56444: Degradation of resolution service when discard-timeout and serve-expired-client-timeout are combined in unusual configuration (bsc#1271890).

Other updates and bugfixes:

Record
SUSE-SU-2026:23349-1
Updated
2026-11-02
OSVSUSE-SU-2026:23360-1 No score

Security update for unbound

This update for unbound fixes the following issues:

Update to version 1.25.2.

Security issues fixed:

  • CVE-2026-14586: DoS via assertion in libngtcp2 for DNS-over-QUIC environments with high concurrency (bsc#1271879).
  • CVE-2026-32665: Remote DNS-over-QUIC denial of service due to quic-size budget bypass (bsc#1271873).
  • CVE-2026-40691: DoS due to heap overflow via single bad DNSCrypt query over TCP (bsc#1271875).
  • CVE-2026-41637: Degradation of resolution service due to improperly accounted client-terminated DNS-over-QUIC queries (bsc#1271891).
  • CVE-2026-42955: Ghost domain window can be extended by up to one cached TTL configured value for A/AAAA glue records (bsc#1271892).
  • CVE-2026-44621: Libunbound applications configured with unwanted-reply-threshold could eventually be abruptly terminated (bsc#1271876).
  • CVE-2026-44687: Off-by-one error in harden-below-nxdomain logic can shadow a stub/forward zone by a legitimate parent's NXDOMAIN (bsc#1271893).
  • CVE-2026-44690: Cross-zone wildcard cache poisoning via RRSIG.labels manipulation (bsc#1271877).
  • CVE-2026-46582: Replay of a wildcard rrset as another piece of data triggers poisoning in the server expired reply path (bsc#1271894).
  • CVE-2026-50045: max-global-quota bypass via single client queries for a deeply nested name under a DNSSEC-signed parent (bsc#1271878).
  • CVE-2026-50046: Possible heap use-after-free in an error path when a DoT forwarded query is jostled out (bsc#1271882).
  • CVE-2026-50243: response-ip/rpz can rewrite BOGUS answers instead of returning SERVFAIL (bsc#1271880).
  • CVE-2026-50248: BOGUS configured primary hostname accepted for XFR in auth/rpz zones (bsc#1271881).
  • CVE-2026-50251: Attacker supplied 0.0.0.0/:: glue triggers defensive full-cache flush (bsc#1271883).
  • CVE-2026-50252: Possible cache poisoning attack by mapping source port population per thread (bsc#1271884).
  • CVE-2026-54478: DNS Cookie bypass when proxy-protocol with with answer-cookie:yes is used (bsc#1271895).
  • CVE-2026-55708: Privacy/configuration issue when adding local data in views through unbound-control (bsc#1271896).
  • CVE-2026-55717: serve-expired-client-timeout and response-ip CNAME redirect could lead to a crash (bsc#1271886).
  • CVE-2026-55990: Crash via crafted client UDP query due to DNSCrypt faulty configuration (bsc#1271887).
  • CVE-2026-55991: Remote DNS-over-QUIC (DoQ) flow-control reacheable assertion failure in libngtcp2 (bsc#1271888).
  • CVE-2026-56416: Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name (bsc#1271889).
  • CVE-2026-56444: Degradation of resolution service when discard-timeout and serve-expired-client-timeout are combined in unusual configuration (bsc#1271890).

Other updates and bugfixes:

Record
SUSE-SU-2026:23360-1
Updated
2026-11-02
OSVUSN-8946-1 No score

unbound vulnerabilities

It was discovered that Unbound incorrectly handled certain TCP connections. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS, Ubuntu 24.04 LTS, Ubuntu 22.04 LTS and Ubuntu 20.04 LTS. (CVE-2026-80225)

It was discovered that Unbound incorrectly handled certain DNS responses. A remote attacker could possibly use this issue to crash Unbound, resulting in a denial of service. (CVE-2026-81634)

It was discovered that Unbound incorrectly handled certain DNS responses during DNSSEC validation. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service. (CVE-2026-85501)

It was discovered that Unbound incorrectly handled outgoing network ports. A remote attacker could possibly use this issue to crash Unbound, resulting in a denial of service. (CVE-2026-50252)

It was discovered that Unbound incorrectly handled certain DNSCrypt packets. A remote attacker could possibly use this issue to crash Unbound, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS, Ubuntu 24.04 LTS, Ubuntu 22.04 LTS, Ubuntu 20.04 LTS and Ubuntu 18.04 LTS. (CVE-2026-40691)

It was discovered that Unbound incorrectly handled certain cached DNS responses. A remote attacker could possibly use this issue to poison Unbound's cache. This issue only affected Ubuntu 26.04 LTS, Ubuntu 24.04 LTS, Ubuntu 22.04 LTS and Ubuntu 20.04 LTS. (CVE-2026-44690)

It was discovered that Unbound incorrectly handled certain DNS-over-QUIC connections. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-32665)

It was discovered that Unbound incorrectly handled certain EDNS options. A remote attacker could possibly use this issue to crash Unbound, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-55973)

Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Unbound incorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 16.04 LTS and Ubuntu 14.04 LTS. (CVE-2023-50387)

It was discovered that Unbound incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 16.04 LTS and Ubuntu 14.04 LTS. (CVE-2023-50868)

Record
USN-8946-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
unbound
Azure Linux:3
 before 1.25.2-1
1.25.2-1
unbound
Debian:12
 All versions, plus listed versions
1.17.1-21.17.1-2+deb12u11.17.1-2+deb12u21.17.1-2+deb12u31.17.1-2+deb12u4
Show 22 moreShow less
1.17.1-2+loong641.18.0-11.18.0-21.19.1-11.19.2-11.20.0-11.21.1-11.22.0-11.22.0-21.23.1-11.24.0-11.24.0-21.24.1-11.24.1-21.24.2-11.25.0-11.25.1-11.25.2-11.26.0-11.26.0-21.26.1-11.26.2-1
 None known
unbound
Debian:13
 before 1.26.1-0+deb13u1, plus listed versions
1.22.0-21.22.0-2+deb13u11.22.0-2+deb13u21.22.0-2+deb13u31.23.1-1
Show 10 moreShow less
1.24.0-11.24.0-21.24.1-11.24.1-21.24.2-11.25.0-11.25.1-11.25.2-11.26.0-11.26.0-2
1.26.1-0+deb13u1
unbound
Debian:14
 before 1.25.2-1, plus listed versions
1.22.0-21.23.1-11.24.0-11.24.0-21.24.1-1
Show 4 moreShow less
1.24.1-21.24.2-11.25.0-11.25.1-1
1.25.2-1
unbound
Mageia:10
 before 1.25.2-1.mga10
1.25.2-1.mga10
unbound
Mageia:9
 before 1.25.2-1.mga9
1.25.2-1.mga9
unbound
Mageia:10
 before 1.26.1-1.mga10
1.26.1-1.mga10
unbound
Mageia:9
 before 1.26.1-1.mga9
1.26.1-1.mga9
python3-unbound
Red Hat:hummingbird:1
 before 0:1.25.2-0.1.hum1
0:1.25.2-0.1.hum1
unbound
Red Hat:hummingbird:1
 before 0:1.25.2-0.1.hum1
0:1.25.2-0.1.hum1
Show 25 moreShow less
Affected packages
PackageAffectedFixed
unbound-anchor
Red Hat:hummingbird:1
 before 0:1.25.2-0.1.hum1
0:1.25.2-0.1.hum1
unbound-devel
Red Hat:hummingbird:1
 before 0:1.25.2-0.1.hum1
0:1.25.2-0.1.hum1
unbound-dracut
Red Hat:hummingbird:1
 before 0:1.25.2-0.1.hum1
0:1.25.2-0.1.hum1
unbound-libs
Red Hat:hummingbird:1
 before 0:1.25.2-0.1.hum1
0:1.25.2-0.1.hum1
unbound-munin
Red Hat:hummingbird:1
 before 0:1.25.2-0.1.hum1
0:1.25.2-0.1.hum1
unbound-utils
Red Hat:hummingbird:1
 before 0:1.25.2-0.1.hum1
0:1.25.2-0.1.hum1
unbound
Root:Debian:11
 before 1.13.1-1+deb11u7.aikido.5
1.13.1-1+deb11u7.aikido.51.13.1-1+deb11u7.aikido.6
rootio-unbound
Root:Debian:11
 before 1.13.1-1+deb11u7.aikido.5
1.13.1-1+deb11u7.aikido.51.13.1-1+deb11u7.aikido.6
unbound
Root:Debian:12
 before 1.17.1-2+deb12u4.aikido.2
1.17.1-2+deb12u4.aikido.21.17.1-2+deb12u4.aikido.31.17.1-2+deb12u4.aikido.41.17.1-2+deb12u4.aikido.5
rootio-unbound
Root:Debian:12
 before 1.17.1-2+deb12u4.aikido.2
1.17.1-2+deb12u4.aikido.21.17.1-2+deb12u4.aikido.31.17.1-2+deb12u4.aikido.41.17.1-2+deb12u4.aikido.5
unbound
SUSE:Linux Micro 6.2
 before 1.25.2-160000.1.1
1.25.2-160000.1.1
unbound
SUSE:Linux Enterprise Server 16.0
 before 1.25.2-160000.1.1
1.25.2-160000.1.1
unbound
SUSE:Linux Enterprise Server for SAP applications 16.0
 before 1.25.2-160000.1.1
1.25.2-160000.1.1
unbound
SUSE:Linux Micro 6.1
 before 1.25.2-slfo.1.1_1.1
1.25.2-slfo.1.1_1.1
unbound
SUSE:Linux Micro 6.0
 before 1.25.2-1.1
1.25.2-1.1
unbound
Ubuntu:26.10
 All versions, plus listed versions
1.24.2-1ubuntu21.25.1-1ubuntu11.25.1-1ubuntu3
 None known
unbound
Ubuntu:26.04:LTS
 before 1.24.2-1ubuntu2.4, plus listed versions
1.22.0-2ubuntu21.22.0-2ubuntu41.24.2-1ubuntu11.24.2-1ubuntu21.24.2-1ubuntu2.11.24.2-1ubuntu2.21.24.2-1ubuntu2.3
1.24.2-1ubuntu2.4
unbound
Ubuntu:Pro:14.04:LTS
 before 1.4.22-1ubuntu4.14.04.3+esm5, plus listed versions
1.4.20-11.4.21-11.4.21-1ubuntu11.4.21-1ubuntu21.4.22-1ubuntu1
Show 10 moreShow less
1.4.22-1ubuntu21.4.22-1ubuntu31.4.22-1ubuntu41.4.22-1ubuntu4.14.04.11.4.22-1ubuntu4.14.04.21.4.22-1ubuntu4.14.04.31.4.22-1ubuntu4.14.04.3+esm11.4.22-1ubuntu4.14.04.3+esm21.4.22-1ubuntu4.14.04.3+esm31.4.22-1ubuntu4.14.04.3+esm4
1.4.22-1ubuntu4.14.04.3+esm5
unbound
Ubuntu:Pro:16.04:LTS
 before 1.5.8-1ubuntu1.1+esm5, plus listed versions
1.4.22-1ubuntu61.5.7-1ubuntu11.5.7-1ubuntu21.5.8-1ubuntu11.5.8-1ubuntu1.1
Show 4 moreShow less
1.5.8-1ubuntu1.1+esm11.5.8-1ubuntu1.1+esm21.5.8-1ubuntu1.1+esm31.5.8-1ubuntu1.1+esm4
1.5.8-1ubuntu1.1+esm5
unbound
Ubuntu:Pro:18.04:LTS
 before 1.6.7-1ubuntu2.6+esm6, plus listed versions
1.6.5-11.6.7-11.6.7-1build11.6.7-1ubuntu11.6.7-1ubuntu2
Show 10 moreShow less
1.6.7-1ubuntu2.11.6.7-1ubuntu2.21.6.7-1ubuntu2.31.6.7-1ubuntu2.41.6.7-1ubuntu2.51.6.7-1ubuntu2.61.6.7-1ubuntu2.6+esm21.6.7-1ubuntu2.6+esm31.6.7-1ubuntu2.6+esm41.6.7-1ubuntu2.6+esm5
1.6.7-1ubuntu2.6+esm6
unbound
Ubuntu:Pro:20.04:LTS
 before 1.9.4-2ubuntu1.11+esm3, plus listed versions
1.9.0-2ubuntu11.9.0-2ubuntu21.9.4-21.9.4-2ubuntu11.9.4-2ubuntu1.1
Show 10 moreShow less
1.9.4-2ubuntu1.21.9.4-2ubuntu1.31.9.4-2ubuntu1.41.9.4-2ubuntu1.51.9.4-2ubuntu1.61.9.4-2ubuntu1.81.9.4-2ubuntu1.91.9.4-2ubuntu1.111.9.4-2ubuntu1.11+esm11.9.4-2ubuntu1.11+esm2
1.9.4-2ubuntu1.11+esm3
unbound
Ubuntu:22.04:LTS
 before 1.13.1-1ubuntu5.17, plus listed versions
1.13.1-1ubuntu11.13.1-1ubuntu31.13.1-1ubuntu51.13.1-1ubuntu5.11.13.1-1ubuntu5.2
Show 12 moreShow less
1.13.1-1ubuntu5.31.13.1-1ubuntu5.41.13.1-1ubuntu5.51.13.1-1ubuntu5.71.13.1-1ubuntu5.81.13.1-1ubuntu5.101.13.1-1ubuntu5.111.13.1-1ubuntu5.121.13.1-1ubuntu5.131.13.1-1ubuntu5.141.13.1-1ubuntu5.151.13.1-1ubuntu5.16
1.13.1-1ubuntu5.17
unbound
Ubuntu:24.04:LTS
 before 1.19.2-1ubuntu3.12, plus listed versions
1.17.1-21.18.0-2ubuntu11.18.0-2ubuntu21.19.1-1ubuntu11.19.2-1ubuntu1
Show 11 moreShow less
1.19.2-1ubuntu31.19.2-1ubuntu3.11.19.2-1ubuntu3.21.19.2-1ubuntu3.31.19.2-1ubuntu3.41.19.2-1ubuntu3.51.19.2-1ubuntu3.61.19.2-1ubuntu3.71.19.2-1ubuntu3.81.19.2-1ubuntu3.91.19.2-1ubuntu3.10
1.19.2-1ubuntu3.12
unbound
openSUSE:Tumbleweed
 before 1.25.2-1.1
1.25.2-1.1
unbound
openSUSE:Leap 16.0
 before 1.25.2-160000.1.1
1.25.2-160000.1.1

History

History
RecordedChangedSources
affected
affected, aliases, references
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-32665 is a high vulnerability (CVSS 7.5) in Nlnet Labs Unbound, published July 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. Fixed in unbound 1.25.2-1.

References

Show 185 moreShow less
This page doesn't list everything

Left out here: the rest of 5 source descriptions. The JSON record has them.

Pages All vulnerabilities Browse Docs Sources Guide Get API key
MoveEnter Open