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CVE-2026-86104

🗓️ 29 Sep 2026 23:05:48Reported by WatchGuardType 
cve
 cve
🔗 web.nvd.nist.gov👁 14 Views

Unauthenticated remote DoS in Fireware OS login process (wgagent) via crafted request.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-86104
30 Sep 202602:32
–circl
cvelist
Cvelist
CVE-2026-86104 Fireware OS Resource Exhaustion in Login Process Allows Denial of Service
29 Sep 202623:05
–cvelist
euvd
EUVD
EUVD-2026-89501
30 Sep 202600:32
–euvd
nvd
NVD
CVE-2026-86104
30 Sep 202600:16
–nvd
vulnrichment
Vulnrichment
CVE-2026-86104 Fireware OS Resource Exhaustion in Login Process Allows Denial of Service
29 Sep 202623:05
–vulnrichment
CNA
Node
OR
watchguardfireware_osRange12.0–12.5.21
watchguardfireware_osRange2026.3–2026.3.2
watchguardfireware_osRange2025.0–2026.2.3
watchguardfireware_osRange12.0–12.12.3
[
  {
    "vendor": "WatchGuard",
    "product": "Fireware OS",
    "versions": [
      {
        "status": "affected",
        "version": "2026.3",
        "versionType": "custom",
        "lessThan": "2026.3.2"
      },
      {
        "status": "affected",
        "version": "2025.0",
        "versionType": "custom",
        "lessThan": "2026.2.3"
      },
      {
        "status": "affected",
        "version": "12.0",
        "versionType": "custom",
        "lessThan": "12.12.3"
      }
    ],
    "defaultStatus": "unaffected",
    "platforms": [
      "Default"
    ]
  },
  {
    "vendor": "WatchGuard",
    "product": "Fireware OS",
    "versions": [
      {
        "status": "affected",
        "version": "12.0",
        "versionType": "custom",
        "lessThan": "12.5.21"
      }
    ],
    "defaultStatus": "unaffected",
    "platforms": [
      "T15/T35"
    ]
  }
]

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30 Sep 2026 16:40Current
5.9Medium risk
Vulners AI Score5.9
CVSS 48.7
EPSS0.00355
SSVC
14