High8.6WatchGuard

High [CVE-2026-13722] WatchGuard Fireware OS contains a firmware validation bypass when processing a backup image via the backup/restore feature

This high-severity WatchGuard advisory covers CVE-2026-13722 affecting Fireware OS.

CVE-2026-13722 Published Jul 3, 2026Updated by vendor Aug 14, 2026

CVE-2026-13722

Affected products & platforms

WatchGuardFirebox / Fireware

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Summary

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.

Affected versions

Fireware OS 2025.1 before 2026.2.1
Fireware OS 12.0 before 12.12.1
Fireware OS 11.0 through 11.12.4+541730
Fireware OS 12.0

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

Fixed versions

2026.2.1
12.12.1

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

An authenticated administrator can exploit this vulnerability to install a tampered firmware image.

Official advisory · high-confidence parse· fetched 15 days ago·verify at source

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