Vulnerability details
CVE-2026-13722
WatchGuard Fireware OS
WatchGuard Firebox Firmware Image Validation Bypass in WatchGuard Fireware OS
CVSS 4.0
8.6High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.6High | 4.0 | CVEProject cvelistV5 (CNA) (WatchGuard) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| WatchGuard | Fireware OS | 11.0 ≤ v ≤ 11.12.4+541730 | CVEProject cvelistV5 (CNA) |
| WatchGuard | Fireware OS | 12.0 ≤ v < 12.12.1 | CVEProject cvelistV5 (CNA) |
| WatchGuard | Fireware OS | 12.0 ≤ v < 12.11.9 | CVEProject cvelistV5 (CNA) |
| WatchGuard | Fireware OS | 12.0 ≤ v | CVEProject cvelistV5 (CNA) |
| WatchGuard | Fireware OS | 2025.1 ≤ v < 2026.2.1 | CVEProject cvelistV5 (CNA) |
References and advisories
2- https://psirt.watchguard.com/CVE-2026-13722 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00022 vendor-advisory
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Details
- Published
- 2026-07-03
- Last updated
- 2026-08-28
- State
- Published
- Assigner (CNA)
- WatchGuard
Exploit prediction (EPSS)
0.33%
Probability of exploitation in 30 days
26.5%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-347