{"id":"CVE-2026-93857","state":"PUBLISHED","title":"Fireware OS Pre-Authentication Stack Buffer Overflow in SIP Proxy Allows Remote Code Execution","description":"A stack-based buffer overflow vulnerability in Fireware OS's SIP proxy allows a remote, unauthenticated attacker to execute arbitrary code by sending a specially crafted request through a policy that uses the SIP proxy.","publishedAt":"2026-10-27T15:52:27.970Z","updatedAt":"2026-10-29T10:45:46.751Z","severity":{"score":9.2,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/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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