Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

CVE record · CVE-2024-43639

Windows KDC Proxy Remote Code Execution Vulnerability

CVSS 9.8 CriticalCriticalEPSS 0.089 · 95th percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.

How we decide what’s critical

Published by the CVE Program (CNA: microsoft) at 12 Nov 2024, 17:54 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Microsoft Windows Server 2025
  • affected 10.0.26100.0 to before 10.0.26100.2314 custom
Microsoft Windows Server 2025 (Server Core installation)
  • affected 10.0.26100.0 to before 10.0.26100.2314 custom
Microsoft Windows Server 2019
  • affected 10.0.17763.0 to before 10.0.17763.6532 custom
Microsoft Windows Server 2019 (Server Core installation)
  • affected 10.0.17763.0 to before 10.0.17763.6532 custom
Microsoft Windows Server 2022
  • affected 10.0.20348.0 to before 10.0.20348.2849 custom
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
  • affected 10.0.25398.0 to before 10.0.25398.1251 custom
Microsoft Windows Server 2016
  • affected 10.0.14393.0 to before 10.0.14393.7515 custom
Microsoft Windows Server 2016 (Server Core installation)
  • affected 10.0.14393.0 to before 10.0.14393.7515 custom
Microsoft Windows Server 2012
  • affected 6.2.9200.0 to before 6.2.9200.25165 custom
Microsoft Windows Server 2012 (Server Core installation)
  • affected 6.2.9200.0 to before 6.2.9200.25165 custom
Microsoft Windows Server 2012 R2
  • affected 6.3.9600.0 to before 6.3.9600.22267 custom
Microsoft Windows Server 2012 R2 (Server Core installation)
  • affected 6.3.9600.0 to before 6.3.9600.22267 custom
Identifiers
CVE-2024-43639
CNA
microsoft
Weakness (CWE)
CWE-197
Tags
Published
12 Nov 2024
Updated
8 Jul 2025

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C CNA (microsoft)
  • CISA KEV Not listed.
  • EPSS 0.089, the 95th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 12 Nov 2024. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.