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CVE-2026-4266

🗓️ 30 Mar 2026 12:38:01Reported by WatchGuardType 
cve
 cve
🔗 web.nvd.nist.gov👁 6 Views

CVE-2026-4266: insecure deserialization in Fireware Access Portal enables code execution with local write access. Affects specific Fireware OS versions; not on models without Access Portal.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2026-4266
27 Mar 202613:39
circl
CNNVD
WatchGuard Fireware OS 安全漏洞
30 Mar 202600:00
cnnvd
Cvelist
CVE-2026-4266 WatchGuard Firebox Insecure Deserialization in Fireware Access Portal
30 Mar 202612:38
cvelist
EUVD
EUVD-2026-17079
30 Mar 202615:32
euvd
NVD
CVE-2026-4266
30 Mar 202613:16
nvd
Positive Technologies
PT-2026-29022
30 Mar 202600:00
ptsecurity
RedhatCVE
CVE-2026-4266
31 Mar 202617:00
redhatcve
Vulnrichment
CVE-2026-4266 WatchGuard Firebox Insecure Deserialization in Fireware Access Portal
30 Mar 202612:38
vulnrichment
CNA
Node
watchguardfireware_osRange12.112.11.8
OR
watchguardfireware_osRange2025.12026.1.2
[
  {
    "defaultStatus": "unaffected",
    "product": "Fireware OS",
    "vendor": "WatchGuard",
    "versions": [
      {
        "lessThanOrEqual": "12.11.8",
        "status": "affected",
        "version": "12.1",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "2026.1.2",
        "status": "affected",
        "version": "2025.1",
        "versionType": "semver"
      }
    ]
  }
]

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