PT-2026-55336 · Watchguard · Fireware Os

Published 2026-07-02 · Updated 2026-07-03 · CVE-2026-13722

Positive Technologies (AI Summary)

CVSS v4.0

8.6

High

Base vector

AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions WatchGuard Fireware OS versions 11.0 through 11.12.4 Update1 WatchGuard Fireware OS versions 12.0 through 12.12 WatchGuard Fireware OS versions 2025.1 through 2025.6.2

Description An issue exists in the backup/restore feature where firmware validation is bypassed when processing a backup image. An authenticated administrator can exploit this to install a tampered firmware image.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Verification of Cryptographic Signature

Weakness Enumeration

CWE-347

Related Identifiers

CVE-2026-13722

Affected Products

Fireware Os

References · 4

• https://watchguard.com/wgrd-psirt/advisory/wgsa-2026-00022 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-13722 · Security Note
• https://twitter.com/CVEnew/status/2072867224637894831 · Twitter Post
• https://twitter.com/infoflowcloud/status/2072868304197161156 · Twitter Post