CVE-2026-4315

WatchGuard Firebox Cross-Site Request Forgery (CSRF) in Fireware Web UI

State: Published
Severity: 7.1 High
Published: Mar 30, 2026
Updated: Aug 27, 2026
Reserved: Mar 17, 2026

Description

A Cross-Site Request Forgery (CSRF) vulnerability in the WatchGuard Fireware OS WebUI could allow a remote attacker to trigger a denial-of-service (DoS) condition in the Fireware Web UI by convincing an authenticated administrator into visiting a malicious web page.

Scores

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

Weaknesses

CWE-352

Affected Products

Product	Versions
Fireware OSWatchGuard	2025.1 to before 2026.2Affected 12.0 to before 12.12Affected 11.8 through 11.12.4+541730Affected
Fireware OSWatchGuard	12.0 to before 12.11.9Affected
Fireware OSWatchGuard	12.0 to before 12.5.18Affected

References

https://psirt.watchguard.com/CVE-2026-4315vendor-advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00006vendor-advisory

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.