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CVE-2026-93866 Fireware OS Pre-Authentication Integer Overflow in Access Portal Allows Out-of-Bounds Write

🗓️ 27 Oct 2026 15:52:27Reported by WatchGuardType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

Unauthenticated integer overflow in WatchGuard Fireware OS Access Portal allows out-of-bounds write.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-93866
27 Oct 202615:52
–cve
euvd
EUVD
EUVD-2026-111157
27 Oct 202615:52
–euvd
nvd
NVD
CVE-2026-93866
27 Oct 202616:17
–nvd
ptsecurity
Positive Technologies
PT-2026-126647
27 Oct 202600:00
–ptsecurity
[
  {
    "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"
    ]
  }
]

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