CVE-2026-13054

WatchGuard Firebox Arbitrary File Write via Path Traversal in Management Web UI

State: Published
Severity: 8.6 High
Published: Jul 2, 2026
Updated: Aug 27, 2026
Reserved: Jun 23, 2026

Description

A path traversal vulnerability in the WatchGuard Fireware OS Management Web UI allows a privileged authenticated attacker to write arbitrary files on the Firebox's filesystem.

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	WatchGuard

Weaknesses

CWE-22

Affected Products

Product	Versions
Fireware OSWatchGuard	2025.1 to before 2026.2.1Affected 12.0 to before 12.12.1Affected 11.0 and laterAffected
Fireware OSWatchGuard	12.0 to before 12.11.9Affected
Fireware OSWatchGuard	12.0 to before 12.5.19Affected

References

https://psirt.watchguard.com/CVE-2026-13054vendor-advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00028vendor-advisory

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