{"id":"CVE-2026-81433","revision":"d373dbe4f8b94ebb92c0d2d0dd65d80e","records":[{"revision":"d373dbe4f8b94ebb92c0d2d0dd65d80e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-81433","aliases":[],"title":"Fireware OS Pre-Authentication Stack Buffer Overflow in fingerd Allows Remote Code Execution","description":"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.","state":0,"publishedAt":"2026-09-29T23:05:47.399+00:00","modifiedAt":"2026-10-01T03:55:40.175+00:00","affected":[{"ecosystem":"Vendor product","name":"Fireware OS","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"WatchGuard\",\n                    \"product\": \"Fireware OS\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"2026.3\",\n                            \"versionType\": \"custom\",\n                            \"lessThan\": \"2026.3.2\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"2025.0\",\n                            \"versionType\": \"custom\",\n                            \"lessThan\": \"2026.2.3\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"12.0\",\n                            \"versionType\": \"custom\",\n                            \"lessThan\": \"12.12.3\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"platforms\": [\n                        \"Default\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"}],"references":["https://psirt.watchguard.com/CVE-2026-81433"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-81433","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-81433","identifiers":["CVE-2026-81433"]},"retained":false,"historicalAffected":[]}],"coverage":[]}