{"id":"CVE-2026-13371","state":"PUBLISHED","title":"WatchGuard Firebox Management Web UI Denial of Service via Unsafe Deserialization","description":"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.","publishedAt":"2026-07-02T23:04:42.674Z","updatedAt":"2026-08-27T22:58:26.802Z","severity":{"score":6.9,"label":"Medium","version":"4.0","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","source":"WatchGuard"},"assigner":"WatchGuard","products":["WatchGuard Fireware OS"],"affected":[{"vendor":"WatchGuard","product":"Fireware 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