WatchGuard TechnologiesCVE-2026-13043

WatchGuard Technologies Endpoint Security: missing authentication

Critical9.3CVE-2026-13043 · Published Oct 1, 2026 · updated Oct 2, 2026

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.

WatchGuard Technologies advisory

Affected versions

Package	Affected	Fixed in
Endpoint Security Product	< 8.00.26.0012	8.00.26.0012

Details and references

CVSS 4.0: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity from: the vendor (its own CVE record or advisory)
Weakness: CWE-306, CWE-798

More WatchGuard Technologies advisories

All WatchGuard Technologies

Date	Advisory	Severity	Fixed in
Sep 30	WatchGuard Technologies Fireware OS: null pointer dereference High8.7Sep 30 CVE-2026-861342026.3.2+3 more	High8.7	2026.3.2+3 more
Sep 30	WatchGuard Technologies Fireware OS: integer overflow High8.2Sep 30 CVE-2026-861332026.3.2+3 more	High8.2	2026.3.2+3 more
Sep 30	WatchGuard Technologies Fireware OS: missing authorization High7.1Sep 30 CVE-2026-861362026.3.2+3 more	High7.1	2026.3.2+3 more
Sep 30	WatchGuard Technologies Fireware OS: missing authorization High7.1Sep 30 CVE-2026-904412026.3.2+3 more	High7.1	2026.3.2+3 more
Sep 30	WatchGuard Technologies Fireware OS: stack buffer overflow High8.6Sep 30 CVE-2026-181452026.3.2+3 more	High8.6	2026.3.2+3 more
Sep 30	WatchGuard Technologies Fireware OS: stack buffer overflow High8.7Sep 30 CVE-2026-814332026.3.2+2 more	High8.7	2026.3.2+2 more