---
id: CVE-2026-16461
title: >-
  Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode
  version-list formatting
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. …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-121
vendor: Red Hat
product: rpcbind
affected:
  - rpcbind (all versions)
  - rpcbind (all versions)
  - rpcbind (all versions)
  - rpcbind (all versions)
  - rpcbind (all versions)
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-22T14:29:48.233539Z'
published: '2026-07-21'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T16:47:44.099Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-16461'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-16461'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2502719'
    label: RHBZ#2502719
tags:
  - cve.org
epss: 0.00259
epssPercentile: 0.17627
ingestedAt: '2026-11-05T22:38:31.402Z'
---

## Overview

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.

## Affected

- `rpcbind (all versions)`
- `rpcbind (all versions)`
- `rpcbind (all versions)`
- `rpcbind (all versions)`
- `rpcbind (all versions)`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

### Workarounds

To mitigate this issue, avoid using the `rpcinfo -s` command against untrusted, attacker-controlled, or compromised rpcbind hosts. Restrict the use of the rpcinfo utility to trusted internal endpoints or secure test environments only.