{"id":"CVE-2026-86136","state":"PUBLISHED","title":"Fireware OS Missing Authorization in wgagent Management API Allows Denial of Service - Variant A","description":"A missing authorization vulnerability in the wgagent management daemon's session initialization function allows an authenticated, low-privileged user (including a read-only or guest administrator account) to crash the wgagent process and read arbitrary files accessible to the daemon by submitting a specially crafted management API request.","publishedAt":"2026-09-29T23:05:47.485Z","updatedAt":"2026-09-30T15:28:13.707Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","source":"WatchGuard"},"assigner":"WatchGuard","products":["WatchGuard Fireware OS"],"affected":[{"vendor":"WatchGuard","product":"Fireware OS","defaultStatus":"unaffected","versions":[{"version":"2026.0","status":"affected","lessThan":"2026.3.2","versionType":"custom"},{"version":"2025.0","status":"affected","lessThan":"2026.2.3","versionType":"custom"},{"version":"12.0","status":"affected","lessThan":"12.12.3","versionType":"custom"}],"platforms":["Default"]},{"vendor":"WatchGuard","product":"Fireware OS","defaultStatus":"unaffected","versions":[{"version":"12.0","status":"affected","lessThan":"12.5.21","versionType":"custom"}],"platforms":["T15/T35"]}],"references":["https://psirt.watchguard.com/CVE-2026-86136"],"weaknesses":["CWE-22","CWE-476","CWE-862"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/86xxx/CVE-2026-86136.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-86136","state":"PUBLISHED","datePublished":"2026-09-29T23:05:47.485Z","dateUpdated":"2026-09-30T15:28:13.707Z","assignerShortName":"WatchGuard","assignerOrgId":"5d1c2695-1a31-4499-88ae-e847036fd7e3","dateReserved":"2026-09-05T03:22:58.693Z"},"containers":{"cna":{"title":"Fireware OS Missing Authorization in wgagent Management API Allows Denial of Service - Variant A","descriptions":[{"lang":"en","value":"A missing authorization vulnerability in the wgagent management daemon's session initialization function allows an authenticated, low-privileged user (including a read-only or guest administrator account) to crash the wgagent process and read arbitrary files accessible to the daemon by submitting a specially crafted management API request."}],"affected":[{"vendor":"WatchGuard","product":"Fireware OS","defaultStatus":"unaffected","versions":[{"version":"2026.0","status":"affected","lessThan":"2026.3.2","versionType":"custom"},{"version":"2025.0","status":"affected","lessThan":"2026.2.3","versionType":"custom"},{"version":"12.0","status":"affected","lessThan":"12.12.3","versionType":"custom"}],"platforms":["Default"]},{"vendor":"WatchGuard","product":"Fireware OS","defaultStatus":"unaffected","versions":[{"version":"12.0","status":"affected","lessThan":"12.5.21","versionType":"custom"}],"platforms":["T15/T35"]}],"references":[{"url":"https://psirt.watchguard.com/CVE-2026-86136","tags":["vendor-advisory"]}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","baseScore":7.1,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22","type":"CWE"},{"cweId":"CWE-476","lang":"en","description":"CWE-476","type":"CWE"},{"cweId":"CWE-862","lang":"en","description":"CWE-862","type":"CWE"}]}],"providerMetadata":{"shortName":"WatchGuard","orgId":"5d1c2695-1a31-4499-88ae-e847036fd7e3","dateUpdated":"2026-09-29T23:05:47.485Z"},"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*","versionStartIncluding":"12.0","versionEndExcluding":"12.5.21"},{"vulnerable":true,"criteria":"cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*","versionStartIncluding":"2026.0","versionEndExcluding":"2026.3.2"},{"vulnerable":true,"criteria":"cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*","versionStartIncluding":"2025.0","versionEndExcluding":"2026.2.3"},{"vulnerable":true,"criteria":"cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*","versionStartIncluding":"12.0","versionEndExcluding":"12.12.3"}]}]}],"credits":[{"lang":"en","value":"WatchGuard AI Security Research","type":"finder"}],"configurations":[{"lang":"en","value":"To exploit this vulnerability, an attacker requires network access to a management interface on the Firebox.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>To exploit this vulnerability, an attacker requires network access to a management interface on the Firebox.</p>"}]}],"solutions":[{"lang":"en","value":"Fireware OS 2026.3.2, Fireware OS 2026.2.3, Fireware OS 12.12.3, Fireware OS 12.5.21","supportingMedia":[{"type":"text/html","base64":false,"value":"Fireware OS 2026.3.2, Fireware OS 2026.2.3, Fireware OS 12.12.3, Fireware OS 12.5.21"}]}],"exploits":[{"lang":"en","value":"WatchGuard is not aware of any exploitation of this vulnerability in the wild.","supportingMedia":[{"type":"text/html","base64":false,"value":"WatchGuard is not aware of any exploitation of this vulnerability in the wild."}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-86136","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-30T14:42:26.667301Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-30T15:28:13.707Z"}}]}}}