CVE-2026-86136

Fireware OS Missing Authorization in wgagent Management API Allows Denial of Service - Variant A

State: Published
Severity: 7.1 High
Published: Sep 29, 2026
Updated: Sep 30, 2026
Reserved: Sep 5, 2026

Description

A missing authorization vulnerability in the wgagent management daemon's session initialization function allows an authenticated, low-privileged user (including a read-only or guest administrator account) to crash the wgagent process and read arbitrary files accessible to the daemon by submitting a specially crafted management API request.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N	WatchGuard

Weaknesses

Affected Products

Product	Versions
Fireware OSWatchGuard	2026.0 to before 2026.3.2Affected 2025.0 to before 2026.2.3Affected 12.0 to before 12.12.3Affected
Fireware OSWatchGuard	12.0 to before 12.5.21Affected

References

https://psirt.watchguard.com/CVE-2026-86136vendor-advisory

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