{"id":"CVE-2025-11838","title":"A memory corruption vulnerability in WatchGuard Fireware OS may allow an unauthenticated attacker to trigger a Denial of Service (DoS) condition in the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with…","summary":"A memory corruption vulnerability in WatchGuard Fireware OS may allow an unauthenticated attacker to trigger a Denial of Service (DoS) condition in the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-763"],"vendor":"watchguard","product":"fireware","affected":["fireware >= 2025.1, < 2025.1.3","fireware >= 12.0.0, < 12.11.5"],"patched":["fireware 12.11.5"],"published":"2025-12-04","updated":"2026-09-25","sourceUpdated":"2026-09-25T23:10:00.463","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-11838","references":[{"url":"https://psirt.watchguard.com/CVE-2025-11838","label":"5d1c2695-1a31-4499-88ae-e847036fd7e3"},{"url":"https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00018","label":"5d1c2695-1a31-4499-88ae-e847036fd7e3"}],"tags":["nvd"],"epss":0.00495,"epssPercentile":0.39909,"ingestedAt":"2026-09-25T23:21:16.880Z","slug":"CVE-2025-11838","body":"## Overview\n\nA memory corruption vulnerability in WatchGuard Fireware OS may allow an unauthenticated attacker to trigger a Denial of Service (DoS) condition in the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with a dynamic gateway peer.\n\n## Affected\n\n- `fireware >= 2025.1, < 2025.1.3`\n- `fireware >= 12.0.0, < 12.11.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fireware 12.11.5`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}