CVE-2026-13722

EUVD-2026-41455
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.2 HIGH
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 19.55%
Affected Products (NVD)
VendorProductVersion
watchguardfireware
2025.1 ≤
𝑥
< 2026.2.1
watchguardfireware
12.5 ≤
𝑥
≤ 12.5.18
watchguardfireware
12.0 ≤
𝑥
< 12.12.1
watchguardfireware
11.0.0 ≤
𝑥
< 11.12.4
watchguardfireware
11.12.4
watchguardfireware
11.12.4:u1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://psirt.watchguard.com/CVE-2026-13722
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00022