CVE-2026-13371
WatchGuard Firebox Management Web UI Denial of Service via Unsafe Deserialization
Vexday Risk Score
10Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 6.9EPSS —KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
02 Jul 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
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
Affected products
WatchGuard · Fireware OS