CVE-2024-43639
Published: 12 November 2024
Summary
CVE-2024-43639 is a critical-severity Numeric Truncation Error (CWE-197) vulnerability in Microsoft Windows Server 2012. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 13.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The vulnerability CVE-2024-43639 is a remote code execution flaw in the Windows KDC Proxy component, carrying a CVSS 3.1 base score of 9.8 under the vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H and mapped to CWE-197.
An unauthenticated attacker with network access can exploit the issue without user interaction to achieve arbitrary code execution, resulting in full compromise of confidentiality, integrity, and availability on affected Windows systems.
Microsoft published an advisory for the vulnerability at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43639. The associated EPSS score rose from a low baseline to a peak of 0.1276 on 2025-12-11 before receding to the current value of 0.0285, indicating that exploitation interest emerged after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-40384
Vulnerability details
Windows KDC Proxy Remote Code Execution Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.