---
id: CVE-2026-16277
title: 'Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist()'
summary: >-
  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 check…
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: '2026-07-21T15:28:58.541669Z'
published: '2026-07-20'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T16:43:12.829Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-16277'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-16277'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2462085'
    label: RHBZ#2462085
  - url: >-
      https://git.linux-nfs.org/?p=steved/rpcbind.git;a=commitdiff;h=bb9bb7286a4c345442946dc2ce3c9e7f67e96d4d
  - url: 'https://www.linuxfromscratch.org/blfs/advisories/consolidated.html'
tags:
  - cve.org
epss: 0.00505
epssPercentile: 0.43358
ingestedAt: '2026-11-05T22:38:31.396Z'
---

## Overview

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.

## 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 -l` 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.