Missing Authentication Vulnerability in WatchGuard Endpoint Security Products
CVE-2026-13043

9.3CRITICAL

Key Information:

Vendor

Watchguard

Status
Endpoint Security
Vendor
CVE Published:
1 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13043?

A missing authentication flaw in the Kernel Memory Access Driver (PSKMAD) employed by WatchGuard endpoint security products enables local, authenticated attackers to circumvent the driver's access-control mechanisms. This can lead to the execution of unauthorized privileged commands, ultimately allowing for the disclosure of sensitive kernel and process memory information.

Affected Version(s)

Endpoint Security Windows 0 < 8.00.26.0012

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-13043
Created by TheMalwareGuardian

References

https://psirt.watchguard.com/CVE-2026-13043
vendor-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.