{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-104381", "assignerOrgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "state": "PUBLISHED", "assignerShortName": "WatchGuard", "dateReserved": "2026-10-01T22:29:33.721Z", "datePublished": "2026-10-27T15:52:27.697Z", "dateUpdated": "2026-10-27T15:52:27.697Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "shortName": "WatchGuard", "dateUpdated": "2026-10-27T15:52:27.697Z"}, "title": "Fireware OS Missing Authentication in FireCluster State Sync Allows BOVPN Tunnel Denial of Service", "descriptions": [{"lang": "en", "value": "A missing authentication vulnerability in Fireware OS's FireCluster state synchronization feature allows an unauthenticated attacker positioned on the cluster synchronization network segment to force premature VPN tunnel termination by sending crafted cluster synchronization traffic."}], "affected": [{"vendor": "WatchGuard", "product": "Fireware OS", "versions": [{"status": "affected", "version": "2025.1", "versionType": "custom", "lessThan": "2026.4"}, {"status": "affected", "version": "12.0", "versionType": "custom", "lessThan": "12.12.4"}], "defaultStatus": "unaffected", "platforms": ["Default"]}, {"vendor": "WatchGuard", "product": "Fireware OS", "versions": [{"status": "affected", "version": "12.0", "versionType": "custom", "lessThan": "12.5.22"}], "defaultStatus": "unaffected", "platforms": ["T15/T35"]}], "references": [{"url": "https://psirt.watchguard.com/CVE-2026-104381", "tags": ["vendor-advisory"]}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*", "versionStartIncluding": "12.0", "versionEndExcluding": "12.5.22"}, {"vulnerable": true, "criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*", "versionStartIncluding": "2025.1", "versionEndExcluding": "2026.4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*", "versionStartIncluding": "12.0", "versionEndExcluding": "12.12.4"}]}]}], "metrics": [{"cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N", "baseScore": 6, "baseSeverity": "MEDIUM"}}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-294", "type": "CWE", "cweId": "CWE-294"}, {"lang": "en", "description": "CWE-306", "type": "CWE", "cweId": "CWE-306"}, {"lang": "en", "description": "CWE-345", "type": "CWE", "cweId": "CWE-345"}]}], "credits": [{"lang": "en", "value": "WatchGuard AI Security Research", "type": "finder"}], "configurations": [{"lang": "en", "value": "This vulnerability affects Firebox appliances deployed as a Firecluster and configured with at least one BOVPN tunnel.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>This vulnerability affects Firebox appliances deployed as a Firecluster and configured with at least one BOVPN tunnel.</p>"}]}], "solutions": [{"lang": "en", "value": "Fireware OS 2026.4, Fireware OS 12.12.4, Fireware OS 12.5.22", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Fireware OS 2026.4, Fireware OS 12.12.4, Fireware OS 12.5.22"}]}], "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."}]}]}}}

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