WatchGuard Firebox Management Web UI Denial of Service via Unsafe Deserialization
Advisory ID
WGSA-2026-00014
CVE
CVE-2026-13371
Impact
Medium
Status
Resolved
Product Family
Firebox
Published Date
Updated Date
Workaround Available
False
CVSS Score
6.9
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
An authenticated administrator can trigger a denial-of-service condition in the Fireware Management Web UI by sending malformed or crafted data to the put_data endpoint, which performs unsafe deserialization of the attacker-supplied input.
Affected
This vulnerability affects Fireware OS 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2.
Resolution
| Vulnerable Version | Resolved Version |
|---|---|
| 2025.1 | 2026.2.1 |
| 12.x | 12.12.1 |
| 12.5.x (T15 & T35 models) | Unresolved |
Credits
Cody Sixteen
Advisory Product List
| Product Family | Product Branch | Product List |
|---|---|---|
Firebox
|
Fireware OS 12.5.x | T15, T35 |
Firebox
|
Fireware OS 2025.1.x | T115-W, T125, T125-W, T145, T145-W, T185, M295, M395, M495, M595, M695 |
Firebox
|
Fireware OS 12.x | T20, T25, T40, T45, T55, T70, T80, T85, M270, M290, M370, M390, M470, M570, M590, M670, M690, M440, M4600, M4800, M5600, M5800, Firebox Cloud, Firebox NV5, FireboxV |