CVE-2026-16277
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.
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
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 Medium
CVSS: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 Medium
CVSS: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 Medium
CVSS: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 Medium
CVSS: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 Medium
CVSS: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 Medium
CVSS: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 Medium
CVSS: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
| Package | Affected | Fixed |
|---|---|---|
rpcbindAzure Linux:3 |
before 1.2.9-1 | 1.2.9-1 |
rpcbindAlpaquita:23 |
1.2.6-r1 up to 1.2.6-r2 | 1.2.6-r2 |
rpcbindAlpaquita:25 |
1.2.7-r0 up to 1.2.7-r1 | 1.2.7-r1 |
rpcbindAlpaquita:stream |
1.2.6-r0 up to 1.2.9-r0 | 1.2.9-r0 |
rpcbindDebian: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 |
rpcbindDebian:13 |
All versions, plus listed versions 1.2.7-1 |
None known |
rpcbindDebian:14 |
All versions, plus listed versions 1.2.7-1 |
None known |
rpcbindUbuntu: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 |
rpcbindUbuntu: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 |
rpcbindUbuntu: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 |
Show 5 moreShow less
| Package | Affected | Fixed |
|---|---|---|
rpcbindUbuntu:20.04:LTS |
All versions, plus listed versions 1.2.5-61.2.5-8 |
None known |
rpcbindUbuntu:22.04:LTS |
All versions, plus listed versions 1.2.5-9build11.2.6-21.2.6-2build1 |
None known |
rpcbindUbuntu: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 |
rpcbindUbuntu:26.10 |
All versions, plus listed versions 1.2.7-1build2 |
None known |
rpcbindUbuntu:26.04:LTS |
All versions, plus listed versions 1.2.7-1build11.2.7-1build2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts, products | CVE List | |
| first indexed | CVE 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
access.redhat.com/security/cve/CVE-2026-16277
bugzilla.redhat.com/show_bug.cgi?id=2462085
git.linux-nfs.org?p=steved/rpcbind.git;a=commitdiff;h=bb9bb7286a4c345442946dc2ce3c9e7f67e96d4d
linuxfromscratch.org/blfs/advisories/consolidated.html
nvd.nist.gov/vuln/detail/CVE-2026-16277
github.com/advisories/GHSA-mjwp-v273-38g8