CVE-2026-13043
CriticalCVSS 9.3Summary
The Kernel Memory Access Driver (PSKMAD) used by WatchGuard endpoint security products does not properly enforce authentication. A local, authenticated attacker can bypass the driver's access-control handshake and issue arbitrary privileged commands to the driver, resulting in disclosure of kernel and process memory.
Risk Assessment
An attacker with local access to the machine can read kernel and process memory, potentially exposing sensitive data, credentials, or enabling further privilege escalation.
Recommendation
Update WatchGuard products to a version containing the PSKMAD driver fix and restrict local access to machines running the endpoint security software.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

