{"id":"CVE-2026-111107","title":"Fireware OS NULL Pointer Dereference in Management Interface Allows Unauthenticated Denial of Service","summary":"A NULL pointer dereference vulnerability in WatchGuard Fireware OS’s management interface allows a remote, unauthenticated attacker with network access to the management interface to crash the management service by sending a specially cr…","severity":"high","cvss":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-1286","CWE-248","CWE-476"],"vendor":"WatchGuard","product":"Fireware OS","affected":["fireware_os >= 2025.1 < 2026.4","fireware_os >= 12.0 < 12.12.4","fireware_os >= 12.0 < 12.5.22"],"published":"2026-10-27","updated":"2026-10-27","sourceUpdated":"2026-10-27T15:52:27.690Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111107","references":[{"url":"https://psirt.watchguard.com/CVE-2026-111107"}],"tags":["cve.org"],"ingestedAt":"2026-10-27T16:11:59.472Z","slug":"CVE-2026-111107","body":"## Overview\n\nA NULL pointer dereference vulnerability in WatchGuard Fireware OS’s management interface allows a remote, unauthenticated attacker with network access to the management interface to crash the management service by sending a specially crafted login request. Repeated exploitation terminates all active administrator sessions and in-progress management operations and can prevent management of the device. Traffic processing is not affected.\n\n## Affected\n\n- `fireware_os >= 2025.1 < 2026.4`\n- `fireware_os >= 12.0 < 12.12.4`\n- `fireware_os >= 12.0 < 12.5.22`\n\n## Remediation\n\nFireware OS 2026.4, Fireware OS 12.12.4, Fireware OS 12.5.22","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}