{"schema":"threatline.record/2","record":{"id":"CVE-2026-81433","aliases":[],"summary":"Fireware OS Pre-Authentication Stack Buffer Overflow in fingerd Allows Remote Code Execution","details":"A stack-based buffer overflow vulnerability in WatchGuard Fireware OS's DHCP fingerprinting daemon (fingerd) allows an unauthenticated attacker with adjacent network access to execute arbitrary code or crash the process by sending a specially crafted DHCP packet.","categories":["Network & edge"],"product":"Fireware OS","vendor":"WatchGuard","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-81433","source_modified_at":"2026-10-01T03:55:40.175Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Fireware OS","vendor":"WatchGuard","versions":[{"status":"affected","version":"2026.3","versionType":"custom","lessThan":"2026.3.2"},{"status":"affected","version":"2025.0","versionType":"custom","lessThan":"2026.2.3"},{"status":"affected","version":"12.0","versionType":"custom","lessThan":"12.12.3"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-81433","source_modified_at":"2026-10-01T03:55:40.175Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Fireware OS","ecosystem":null},"version":"2026.3.2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-81433","source_modified_at":"2026-10-01T03:55:40.175Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Fireware OS","ecosystem":null},"version":"2026.2.3","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-81433","source_modified_at":"2026-10-01T03:55:40.175Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Fireware OS","ecosystem":null},"version":"12.12.3","basis":"first unaffected version stated in the CVE record"}],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09348,"score_date":"2026-10-23"},"published_at":"2026-09-29T23:05:47.399Z","modified_at":"2026-10-01T03:55:40.175Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-81433","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-01T03:55:40.175Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-81433","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://psirt.watchguard.com/CVE-2026-81433","tags":["vendor-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-09-30T00:00:00+00:00"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-01T03:55:40.175Z","content_hash":"0a9d2c6e029cacfd71524319e9726b7bdc063e51fd318d7793df52a27be94d4f"}}