by Kastro
Paper/Archive/CVE-2026-13043

CVE-2026-13043

WatchGuard Endpoint Security — WatchGuard Endpoint Security Missing Authentication in Kernel Memory Access Driver Allows Arbitrary Kernel Memory Access

EPSS 0.1%CVSS 9.3
critical.is priorityof 100
29
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 4.0.040 × 200.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Endpoint Security< 8.00.26.00128.00.26.0012CNA

Scores by source

WatchGuard (CNA)9.3CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisorypsirt.watchguard.com/CVE-2026-13043