{"id":"CVE-2026-86104","title":"An uncontrolled resource consumption vulnerability in the Fireware OS login process (wgagent) allows a remote, unauthenticated attacker to cause a denial of service by sending a specially crafted request.","summary":"An uncontrolled resource consumption vulnerability in the Fireware OS login process (wgagent) allows a remote, unauthenticated attacker to cause a denial of service by sending a specially crafted request.","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-400","CWE-409","CWE-770"],"vendor":"watchguard","product":"fireware","affected":["fireware >= 12.0, < 12.5.21","fireware >= 12.12, < 12.12.3","fireware >= 2025.0, < 2026.2.3","fireware >= 2026.3, < 2026.3.2"],"patched":["fireware 2026.3.2"],"published":"2026-09-30","updated":"2026-10-06","sourceUpdated":"2026-10-06T20:49:44.270","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86104","references":[{"url":"https://psirt.watchguard.com/CVE-2026-86104","label":"5d1c2695-1a31-4499-88ae-e847036fd7e3"}],"tags":["nvd","cve.org"],"epss":0.00369,"epssPercentile":0.30622,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-30T14:22:18.509930Z"},"scores":{"nvd":7.5,"cna":8.7},"ingestedAt":"2026-09-29T23:52:50.547Z","slug":"CVE-2026-86104","body":"## Overview\n\nAn uncontrolled resource consumption vulnerability in the Fireware OS login process (wgagent) allows a remote, unauthenticated attacker to cause a denial of service by sending a specially crafted request.\n\n## Affected\n\n- `fireware >= 12.0, < 12.5.21`\n- `fireware >= 12.12, < 12.12.3`\n- `fireware >= 2025.0, < 2026.2.3`\n- `fireware >= 2026.3, < 2026.3.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fireware 2026.3.2`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":216824,"id":"CVE-2026-86104","ts":1791321668764,"field":"cvss","old":"8.7","new":"7.5"}]}