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CVE-2026-81851

🗓️ 27 Aug 2026 22:58:26Reported by WatchGuardType 
cve
 cve
🔗 web.nvd.nist.gov👁 6 Views

Heap-based buffer overflow in Fireware OS iked allows authenticated admin to crash the daemon.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-81851 Fireware OS Heap-Based Buffer Overflow in iked Allows Denial of Service
27 Aug 202622:58
cvelist
euvd
EUVD
EUVD-2026-67305
28 Aug 202600:32
euvd
nvd
NVD
CVE-2026-81851
28 Aug 202600:18
nvd
ptsecurity
Positive Technologies
PT-2026-82807
27 Aug 202600:00
ptsecurity
CNA
Node
OR
watchguardfireware_osRange12.012.11.9
watchguardfireware_osRange12.012.5.18
watchguardfireware_osRange2025.02026.2.1
watchguardfireware_osRange12.012.12.1
[
  {
    "vendor": "WatchGuard",
    "product": "Fireware OS",
    "versions": [
      {
        "status": "affected",
        "version": "2025.0",
        "versionType": "custom",
        "lessThan": "2026.2.1"
      },
      {
        "status": "affected",
        "version": "12.0",
        "versionType": "custom",
        "lessThan": "12.12.1"
      }
    ],
    "defaultStatus": "unaffected",
    "platforms": [
      "Default"
    ]
  },
  {
    "vendor": "WatchGuard",
    "product": "Fireware OS",
    "versions": [
      {
        "status": "affected",
        "version": "12.0",
        "versionType": "custom",
        "lessThan": "12.11.9"
      }
    ],
    "defaultStatus": "unaffected",
    "platforms": [
      "EUCC"
    ]
  },
  {
    "vendor": "WatchGuard",
    "product": "Fireware OS",
    "versions": [
      {
        "status": "affected",
        "version": "12.0",
        "versionType": "custom",
        "lessThan": "12.5.18"
      }
    ],
    "defaultStatus": "unaffected",
    "platforms": [
      "T15/T35"
    ]
  }
]

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