CVE-2026-13722 PUBLISHED

WatchGuard Firebox Firmware Image Validation Bypass in WatchGuard Fireware OS

Assigner: WatchGuard
Reserved: 29.06.2026 Published: 02.07.2026 Updated: 02.07.2026

WatchGuard Fireware OS contains a firmware validation bypass when processing a backup image via the backup/restore feature. An authenticated administrator can exploit this vulnerability to install a tampered firmware image.This vulnerability affects Fireware OS 11.0 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2025.6.2.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 8.6

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	WatchGuard
Product	Fireware OS
Versions	Default: unaffected affected from 11.0 to 11.12.4+541730 (incl.) affected from 12.0 to 12.12 (incl.) affected from 12.5 to 12.5.18 (incl.) affected from 2025.1 to 2026.2 (incl.)

References

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00022

Problem Types

CWE-347 Improper Verification of Cryptographic Signature CWE

Impacts

CAPEC-185 Malicious Software Download