CVE-2026-13371
MEDIUMWatchGuard Firebox Management Web UI Denial of Service via Unsafe Deserialization
Title source: cnaDescription
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.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00014
Scores
CVSS v4
6.9
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Details
CWE
CWE-502
Status
published
Products (3)
WatchGuard/Fireware OS
12.0 - 12.12
WatchGuard/Fireware OS
12.5 - 12.5.18
WatchGuard/Fireware OS
2025.1 - 2026.2
Published
Jul 03, 2026
Tracked Since
Jul 03, 2026