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Fencer Intel
medium 6.5

CVE-2026-16461 json

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

published 3mo ago modified 4d ago also EUVD-2026-46185

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

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.

Patch / fix

  • rpcbind SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +11 more 0.2.3-150000.5.17.1
  • rpcbind SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 1.2.9-160000.2.1
  • rpcbind Linux Micro 6.1 1.2.9-slfo.1.1_2.1
  • rpcbind Linux Micro 6.0 1.2.9-2.1
  • rpcbind SLES LTSS Extended Security 12 SP5 0.2.3-24.15.1

suse advisories SUSE-SU-2026:4568-1SUSE-SU-2026:4075-1SUSE-SU-2026:23495-1SUSE-SU-2026:23628-1SUSE-SU-2026:23518-1SUSE-SU-2026:23451-1

  • rpcbind openSUSE Tumbleweed 1.2.9-2.1
  • rpcbind openSUSE Leap 16.0 1.2.9-160000.2.1

opensuse advisories openSUSE-SU-2026:11728-1openSUSE-SU-2026:21765-1

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-16461 updated cvss 6.5

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

  • Red Hat Enterprise Linux 8 rpcbind, rpcbind 1.2.7-3.el10 Red Hat Enterprise Linux 9 rpcbind, rpcbind 1.2.7-3.el10 Red Hat Enterprise Linux 10 rpcbind 1.2.7-3.el10 Red Hat OpenShift Container Platform 4 rpcbind 1.2.7-3.el10 Red Hat OpenShift Container Platform 5 rpcbind 1.2.7-3.el10
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3mo ago

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat OpenShift Container Platform 4
  • Red Hat Red Hat OpenShift Container Platform 5

Classification

Weakness
  • CWE-121 Stack-based Buffer Overflow

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.