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CVE-2026-16461

Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting

6.5 MediumFix available

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

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

0.26%Unchanged since Jul 22, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.5

Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Record
CVE-2026-16461
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-2026-46185 6.5

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Record
EUVD-2026-46185
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-qh7w-564q-qrc7 6.5

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode ...

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Record
GHSA-qh7w-564q-qrc7
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. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Record
CVE-2026-16461
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-2026-16461 6.5
Record
BELL-CVE-2026-16461
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-2026-16461 6.5

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Record
DEBIAN-CVE-2026-16461
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
Show 10 moreShow less
OSVUBUNTU-CVE-2026-16461 6.5

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Record
UBUNTU-CVE-2026-16461
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-93306 No score

CVE-2026-16461 affecting package rpcbind 1.2.9-1

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Record
AZL-93306
Updated
2026-11-05
OSVopenSUSE-SU-2026:11728-1 No score

rpcbind-1.2.9-2.1 on GA media

These are all security issues fixed in the rpcbind-1.2.9-2.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:11728-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:21765-1 No score

Security update for rpcbind

This update for rpcbind fixes the following issue:

  • CVE-2026-16461: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting (bsc#1272340).
Record
openSUSE-SU-2026:21765-1
Updated
2026-11-02
OSVSUSE-SU-2026:23451-1 No score

Security update for rpcbind

This update for rpcbind fixes the following issue:

  • CVE-2026-16461: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting (bsc#1272340).
Record
SUSE-SU-2026:23451-1
Updated
2026-11-02
OSVSUSE-SU-2026:23495-1 No score

Security update for rpcbind

This update for rpcbind fixes the following issue:

  • CVE-2026-16461: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting (bsc#1272340).
Record
SUSE-SU-2026:23495-1
Updated
2026-11-02
OSVSUSE-SU-2026:23518-1 No score

Security update for rpcbind

This update for rpcbind fixes the following issue:

  • CVE-2026-16461: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting (bsc#1272340).
Record
SUSE-SU-2026:23518-1
Updated
2026-11-02
OSVSUSE-SU-2026:23628-1 No score

Security update for rpcbind

This update for rpcbind fixes the following issue:

  • CVE-2026-16461: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting (bsc#1272340).
Record
SUSE-SU-2026:23628-1
Updated
2026-11-02
OSVSUSE-SU-2026:4075-1 No score

Security update for rpcbind

This update for rpcbind fixes the following issue:

  • CVE-2026-16461: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting (bsc#1272340).
Record
SUSE-SU-2026:4075-1
Updated
2026-11-02
OSVSUSE-SU-2026:4568-1 No score

Security update for rpcbind

This update for rpcbind fixes the following issues:

  • CVE-2026-16461: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting (bsc#1272340).
  • CVE-2026-94640: unbounded memory allocation in statistics tracking allows for unauthenticated remote denial of service (bsc#1282326).
Record
SUSE-SU-2026:4568-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
rpcbind
Azure Linux:3
 through 1.2.9-1 None known
rpcbind
Alpaquita:23
 1.2.6-r1 and later None known
rpcbind
Alpaquita:25
 1.2.7-r0 and later None known
rpcbind
Alpaquita:stream
 1.2.6-r0 and later None known
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
SUSE:Linux Micro 6.0
 before 1.2.9-2.1
1.2.9-2.1
rpcbind
SUSE:Linux Micro 6.2
 before 1.2.9-160000.2.1
1.2.9-160000.2.1
rpcbind
SUSE:Linux Micro 6.1
 before 1.2.9-slfo.1.1_2.1
1.2.9-slfo.1.1_2.1
Show 27 moreShow less
Affected packages
PackageAffectedFixed
rpcbind
SUSE:Linux Enterprise Server 16.0
 before 1.2.9-160000.2.1
1.2.9-160000.2.1
rpcbind
SUSE:Linux Enterprise Server for SAP applications 16.0
 before 1.2.9-160000.2.1
1.2.9-160000.2.1
rpcbind
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5
 before 0.2.3-24.15.1
0.2.3-24.15.1
rpcbind
SUSE:Linux Enterprise Micro 5.3
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise Micro 5.4
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise Micro 5.5
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise Module for Basesystem 15 SP7
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise Server 15 SP4-LTSS
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise Server 15 SP5-LTSS
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise Server 15 SP6-LTSS
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise Server for SAP Applications 15 SP4
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise Server for SAP Applications 15 SP5
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
rpcbind
SUSE:Linux Enterprise Server for SAP Applications 15 SP6
From an advisory covering 2 CVEs
 before 0.2.3-150000.5.17.1
0.2.3-150000.5.17.1
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
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
rpcbind
openSUSE:Tumbleweed
 before 1.2.9-2.1
1.2.9-2.1
rpcbind
openSUSE:Leap 16.0
 before 1.2.9-160000.2.1
1.2.9-160000.2.1

History

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

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

In short

CVE-2026-16461 is a medium vulnerability (CVSS 6.5) in Red Hat Enterprise Linux 10, published July 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. Fixed in rpcbind 1.2.9-2.1.

References

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