CVE-2026-13043 WatchGuard Endpoint Security - Authentication Bypass

WatchGuard endpoint security contains a missing authentication vulnerability in Kernel Memory Access Driver (PSKMAD), letting local authenticated attackers bypass access control and disclose kernel and process memory.

CVSS base score 9.3 /10
Critical
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Required
EPSS
0.14% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Information Disclosure
CVSS vector
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
Published
1 October 2026
Updated
15 October 2026
Weakness
CWE-306

Vendor fix

Update to the latest version of WatchGuard endpoint security.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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