{"id":"CVE-2026-113881","title":"Fireware OS Stack Buffer Overflow in VPN Network Access Enforcement Allows Unprivileged Code Execution","summary":"A stack-based buffer overflow vulnerability in Fireware OS's VPN Network Access Enforcement process allows an authenticated mobile VPN user to create a denial of service condition and potentially execute arbitrary code as an unprivileged…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-121","CWE-129"],"vendor":"WatchGuard","product":"Fireware OS","affected":["fireware_os >= 2025.1 < 2026.4","fireware_os >= 12.9 < 12.12.4"],"published":"2026-10-27","updated":"2026-10-27","sourceUpdated":"2026-10-27T15:52:28.229Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-113881","references":[{"url":"https://psirt.watchguard.com/CVE-2026-113881"}],"tags":["cve.org"],"ingestedAt":"2026-10-27T16:11:59.479Z","slug":"CVE-2026-113881","body":"## Overview\n\nA stack-based buffer overflow vulnerability in Fireware OS's VPN Network Access Enforcement process allows an authenticated mobile VPN user to create a denial of service condition and potentially execute arbitrary code as an unprivileged process by sending a specially crafted request.\n\n## Affected\n\n- `fireware_os >= 2025.1 < 2026.4`\n- `fireware_os >= 12.9 < 12.12.4`\n\n## Remediation\n\nFireware OS 2026.4, Fireware OS 12.12.4","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}