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CVE-2026-103903

🗓️ 12 Oct 2026 10:37:23Reported by ENISAType 
cve
 cve
🔗 web.nvd.nist.gov👁 5 Views

Remote authenticated privilege escalation in MikroTik RouterOS WinBox via authentication bypass.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-103903 MikroTik RouterOS WinBox split-principal authentication bypass allows privilege escalation
12 Oct 202610:37
–cvelist
euvd
EUVD
EUVD-2026-97325
12 Oct 202612:30
–euvd
nvd
NVD
CVE-2026-103903
12 Oct 202611:17
–nvd
[
  {
    "vendor": "MikroTik",
    "product": "RouterOS",
    "modules": [
      "WinBox authentication / user service"
    ],
    "versions": [
      {
        "status": "affected",
        "version": "7.0.0",
        "lessThan": "7.24.5",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "7.25rc1",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "affected"
  }
]

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12 Oct 2026 11:17Current
6Medium risk
Vulners AI Score6
CVSS 48.7
CVSS 3.18.8
5