November 14, 2026

CVE Watchtower

CVE-2026-13043WatchGuard Endpoint Security Missing Authentication for Critical Function

NVD

Vulnerability 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 privileged commands to the driver, resulting in disclosure of kernel and process memory.
Severity Level
CRITICAL(9.3)
Published Date
Oct 1, 2026
Last Modified
Oct 1, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.15%Probability
Root Weakness (CWE)
CWE-306: Missing Authentication for Critical Function β†—
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
CWE-798: Use of Hard-coded Credentials β†—
The software contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data.
CVSS v4.0 Base Metrics — Score 9.3 (CRITICAL)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Attack VectorLocal
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredLow
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)High
Integrity (Subsequent System)High
Availability (Subsequent System)High

Affected & Patched Versions

Affected Versions
  • WatchGuard Endpoint Security < 8.00.26.0012
Patched Versions
  • WatchGuard Endpoint Security 8.00.26.0012

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is critical.

  1. Check whether you run WatchGuard Endpoint Security and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Oct 1, 2026Published
  • Oct 1, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 03:11 UTC