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CVE-2026-16277

Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist()

6.5 MediumFix available

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with rpcinfo -l, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.51%Up 0.2 points since Jul 21, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.5

Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist()

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with rpcinfo -l, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Record
CVE-2026-16277
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-121
Updated
2026-11-05
EUVDEUVD-2026-45950 6.5

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with rpcinfo -l, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Record
EUVD-2026-45950
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-05
GitHub AdvisoriesGHSA-mjwp-v273-38g8 6.5

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote...

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with rpcinfo -l, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Record
GHSA-mjwp-v273-38g8
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-121
Updated
2026-11-02
NVD 6.5

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with rpcinfo -l, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Record
CVE-2026-16277
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-121
Updated
2026-11-05
OSVBELL-CVE-2026-16277 6.5
Record
BELL-CVE-2026-16277
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2026-16277 6.5

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with rpcinfo -l, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Record
DEBIAN-CVE-2026-16277
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-16277 6.5

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with rpcinfo -l, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Record
UBUNTU-CVE-2026-16277
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-93009 No score

CVE-2026-16277 affecting package rpcbind for versions less than 1.2.9-1

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with rpcinfo -l, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Record
AZL-93009
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
rpcbind
Azure Linux:3
before 1.2.9-1
1.2.9-1
rpcbind
Alpaquita:23
1.2.6-r1 up to 1.2.6-r2
1.2.6-r2
rpcbind
Alpaquita:25
1.2.7-r0 up to 1.2.7-r1
1.2.7-r1
rpcbind
Alpaquita:stream
1.2.6-r0 up to 1.2.9-r0
1.2.9-r0
rpcbind
Debian:12
All versions, plus listed versions
1.2.6-61.2.6-71.2.6-81.2.6-8.11.2.7-1
None known
rpcbind
Debian:13
All versions, plus listed versions
1.2.7-1
None known
rpcbind
Debian:14
All versions, plus listed versions
1.2.7-1
None known
rpcbind
Ubuntu:Pro:14.04:LTS
All versions, plus listed versions
0.2.0-8.2ubuntu20.2.1-2ubuntu10.2.1-2ubuntu2.10.2.1-2ubuntu2.20.2.1-2ubuntu2.2+esm10.2.1-2ubuntu2.2+esm20.2.1-2ubuntu2.2+esm3
None known
rpcbind
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
0.2.1-6ubuntu40.2.3-0.20.2.3-0.2ubuntu0.10.2.3-0.2ubuntu0.16.04.10.2.3-0.2ubuntu0.16.04.1+esm10.2.3-0.2ubuntu0.16.04.1+esm20.2.3-0.2ubuntu0.16.04.1+esm3
None known
rpcbind
Ubuntu:18.04:LTS
All versions, plus listed versions
0.2.3-0.60.2.3-0.6ubuntu0.18.04.10.2.3-0.6ubuntu0.18.04.20.2.3-0.6ubuntu0.18.04.30.2.3-0.6ubuntu0.18.04.4
None known
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Affected packages
PackageAffectedFixed
rpcbind
Ubuntu:20.04:LTS
All versions, plus listed versions
1.2.5-61.2.5-8
None known
rpcbind
Ubuntu:22.04:LTS
All versions, plus listed versions
1.2.5-9build11.2.6-21.2.6-2build1
None known
rpcbind
Ubuntu:24.04:LTS
All versions, plus listed versions
1.2.6-61.2.6-71.2.6-7build11.2.6-7ubuntu11.2.6-7ubuntu2
None known
rpcbind
Ubuntu:26.10
All versions, plus listed versions
1.2.7-1build2
None known
rpcbind
Ubuntu:26.04:LTS
All versions, plus listed versions
1.2.7-1build11.2.7-1build2
None known

History

History
RecordedChangedSources
facts, productsCVE List
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

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

In short

CVE-2026-16277 is a medium vulnerability (CVSS 6.5) in Red Hat Enterprise Linux 10, published July 20, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 43rd percentile. Fixed in rpcbind 1.2.9-1.

References

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