---
id: CVE-2026-16524
title: >-
  A command injection flaw in PCP's linux_sockets PMDA allows malicious shell
  metacharacters via the network.persocket.filter metric.

  This failed validation lets attackers execute arbitrary commands as the PMDA
  user when metrics refresh.
summary: >-
  A command injection flaw in PCP's linux_sockets PMDA allows malicious shell
  metacharacters via the network.persocket.filter metric.

  This failed validation lets attackers execute arbitrary commands as the PMDA
  user when metrics refresh.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
vendor: Red Hat
product: pcp
affected:
  - pcp (all versions)
  - pcp (all versions)
  - pcp (all versions)
  - pcp (all versions)
  - pcp (all versions)
  - pcp
  - pcp (all versions)
  - openshift/ose-rhel-coreos-9
published: '2026-07-30'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T10:16:43.247'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16524'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:55560'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:55617'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:55740'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:72272'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:72273'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-16524'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2506023'
    label: secalert@redhat.com
tags:
  - nvd
  - cve.org
epss: 0.00652
epssPercentile: 0.49215
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-07-30T14:37:48.088368Z'
ingestedAt: '2026-09-28T10:07:17.787Z'
---

## Overview

A command injection flaw in PCP's linux_sockets PMDA allows malicious shell metacharacters via the network.persocket.filter metric.
This failed validation lets attackers execute arbitrary commands as the PMDA user when metrics refresh.

## Remediation

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