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Δ / VULNERABILITY RECORD

CVE-2025-21311.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSCRITICAL / 9.8No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Jan 14, 2025

Disclosure summary

Windows NTLM V1 Elevation of Privilege Vulnerability

Source-reported weakness categories

CWE-303

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2025-Jan

Open original source · Updated Jan 14, 2025

Windows NTLM V1 Elevation of Privilege Vulnerability

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 9.8

VendorProduct / associationVersion / bounds
Microsoft update guideWindows Server 2025 (Server Core installation) (MSRC status code 3)
Microsoft update guideWindows Server 2022, 23H2 Edition (Server Core installation) (MSRC status code 3)
Microsoft update guideWindows 11 Version 24H2 for ARM64-based Systems (MSRC status code 3)
Microsoft update guideWindows 11 Version 24H2 for x64-based Systems (MSRC status code 3)
Microsoft update guideWindows Server 2025 (MSRC status code 3)

Vendor remediation references

  • 5050009 · build 10.0.26100.2894 · product IDs 12437, 12389, 12390, 12436
  • Vendor guidance · product IDs 12437, 12389, 12390, 12436
  • 5050009 · product IDs 12437, 12389, 12390, 12436
  • 5049984 · build 10.0.25398.1369 · product IDs 12244
  • Vendor guidance · product IDs 12244
  • 5049984 · product IDs 12244
  • Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The

Original records & references

PUBLISHED 2025-01-14T03:00:00-05:00
MODIFIED 2025-01-14T03:00:00-05:00
INGESTED 2026-10-08T12:50:15-04:00