Vulnerability · Published Jul 2, 2026 · Assigned by WatchGuard
CVE-2026-13054WatchGuard Firebox Arbitrary File Write via Path Traversal in Management Web UI
High 8.6
In plain English
A high-severity path traversal in Fireware OS from WatchGuard. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).
Severity (CVSS 4.0)8.6High
Exploit odds (30 days)0.6%top 50.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A path traversal vulnerability in the WatchGuard Fireware OS Management Web UI allows a privileged authenticated attacker to write arbitrary files on the Firebox's filesystem.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WatchGuard | Fireware OS | 2025.1 – before 2026.2.112.0 – before 12.12.111.0 – before * |
| WatchGuard | Fireware OS | 12.0 – before 12.11.9 |
| WatchGuard | Fireware OS | 12.0 – before 12.5.19 |
Weakness: CWE-22 · 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
References
- https://psirt.watchguard.com/CVE-2026-13054 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00028 vendor-advisory