What’s Vulnerable › Vulnerabilities

CVE-2026-13043: WatchGuard Endpoint Security Missing Authentication in Kernel Memory Access Driver Allows Arbitrary Kernel Memory Access

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-01 · updated 2026-10-16
• Weakness: CWE-306

Description

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 products

• WatchGuard Endpoint Security: before 8.00.26.0012 — fixed in 8.00.26.0012

How to fix

Upgrade to a fixed version: WatchGuard Endpoint Security 8.00.26.0012. Check the vendor advisory for mitigations.

References

• https://psirt.watchguard.com/CVE-2026-13043

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