CVE-2024-43451

MEDIUM severity · CVSS 6.5 · CWE-73 · actively exploited (CISA KEV)

6.5CVSS MEDIUM ● exploited

🔴 Actively exploited in the wild (CISA Known Exploited Vulnerabilities). Added to KEV 2024-11-12. US federal agencies must patch by 2024-12-03.

Summary

NTLM Hash Disclosure Spoofing Vulnerability

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

Confidentiality impactHigh

Integrity impactNone

Availability impactNone

Exploit probability (EPSS)90%

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products we track (2)

Windows Server 2022 Windows Server 2025

Recommendation

This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.

Official patch: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43451 ↗

Additional information

NVD record
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43451Patch
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-43451