---
id: CVE-2026-13043
title: >-
  A missing authentication vulnerability in the Kernel Memory Access Driver
  (PSKMAD) used by WatchGuard endpoint security products allows a local,
  authenticated attacker to bypass the driver's access-control handshake and
  issue arbitrary p…
summary: >-
  A missing authentication vulnerability in the Kernel Memory Access Driver
  (PSKMAD) used by WatchGuard endpoint security products allows a local,
  authenticated attacker to bypass the driver's access-control handshake and
  issue arbitrary p…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-306
  - CWE-798
vendor: watchguard
product: endpoint_security
affected:
  - endpoint_security < 8.00.26.0012
patched:
  - endpoint_security 8.00.26.0012
published: '2026-10-01'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T13:43:03.120'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-13043'
references:
  - url: 'https://psirt.watchguard.com/CVE-2026-13043'
    label: 5d1c2695-1a31-4499-88ae-e847036fd7e3
tags:
  - nvd
  - exploit-available
  - cve.org
epss: 0.00149
epssPercentile: 0.04011
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/TheMalwareGuardian/CVE-2026-13043'
  checkedAt: '2026-10-27T18:52:45.377Z'
exploitAvailable: true
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-01T16:31:26.482445Z'
scores:
  nvd: 8.8
  cna: 9.3
ingestedAt: '2026-10-01T18:55:42.360Z'
---

## Overview

A missing authentication vulnerability in the Kernel Memory Access Driver (PSKMAD) used by WatchGuard endpoint security products allows a local, authenticated attacker to bypass the driver's access-control handshake and issue arbitrary privileged commands to the driver, resulting in disclosure of kernel and process memory.

## Affected

- `endpoint_security < 8.00.26.0012`

## Remediation

Upgrade past the affected range:

- `endpoint_security 8.00.26.0012`