---
id: CVE-2026-16526
title: >-
  A flaw in the PCP linux_sockets module exposes an unsecured internal
  connection.

  An attacker with initial code execution can exploit this to escalate
  privileges and execute arbitrary commands as root.
summary: >-
  A flaw in the PCP linux_sockets module exposes an unsecured internal
  connection.

  An attacker with initial code execution can exploit this to escalate
  privileges and execute arbitrary commands as root.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-403
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: '2026-09-28T10:16:43.420'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16526'
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-2026-16526'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2506026'
    label: secalert@redhat.com
tags:
  - nvd
  - cve.org
epss: 0.00454
epssPercentile: 0.36899
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-07-30T13:55:08.055108Z'
ingestedAt: '2026-09-28T10:07:17.787Z'
---

## Overview

A flaw in the PCP linux_sockets module exposes an unsecured internal connection.
An attacker with initial code execution can exploit this to escalate privileges and execute arbitrary commands as root.

## Remediation

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