{"schema":"threatline.record/2","record":{"id":"CVE-2026-93857","aliases":[],"summary":"Fireware OS Pre-Authentication Stack Buffer Overflow in SIP Proxy Allows Remote Code Execution","details":"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.","categories":["Network & edge"],"product":"Fireware OS","vendor":"WatchGuard","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93857","source_modified_at":"2026-10-27T15:52:27.970Z","fetched_at":"2026-10-27T16:27:21.584480Z","product":"Fireware OS","vendor":"WatchGuard","versions":[{"status":"affected","version":"2025.1","versionType":"custom","lessThan":"2026.4"},{"status":"affected","version":"12.0","versionType":"custom","lessThan":"12.12.4"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93857","source_modified_at":"2026-10-27T15:52:27.970Z","fetched_at":"2026-10-27T16:27:21.584480Z","product":"Fireware OS","vendor":"WatchGuard","versions":[{"status":"affected","version":"12.0","versionType":"custom","lessThan":"12.5.22"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93857","source_modified_at":"2026-10-27T15:52:27.970Z","fetched_at":"2026-10-27T16:27:21.584480Z","package":{"name":"Fireware OS","ecosystem":null},"version":"2026.4","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93857","source_modified_at":"2026-10-27T15:52:27.970Z","fetched_at":"2026-10-27T16:27:21.584480Z","package":{"name":"Fireware OS","ecosystem":null},"version":"12.12.4","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93857","source_modified_at":"2026-10-27T15:52:27.970Z","fetched_at":"2026-10-27T16:27:21.584480Z","package":{"name":"Fireware OS","ecosystem":null},"version":"12.5.22","basis":"first unaffected version stated in the CVE record"}],"cvss":9.2,"severity":"Critical","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-27T15:52:27.970Z","modified_at":"2026-10-27T15:52:27.970Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-93857","fetched_at":"2026-10-27T16:27:21.584480Z","source_modified_at":"2026-10-27T15:52:27.970Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://psirt.watchguard.com/CVE-2026-93857","tags":["vendor-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-27T15:52:27.970Z","content_hash":"fbcb71b7efdc49d8d021a4d6c4ecb5b39171facf9d290eb8759b49ac27f4daa2"}}