CVE-2024-43639

Name: CVE-2024-43639
Creator: NVD / NIST
Published: 2024-11-12T18:15:33.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 8.75%

Last modified Jun 17, 2026

CVE-2024-43639 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Windows KDC Proxy Remote Code Execution Vulnerability. EPSS estimates a 8.75% chance of exploitation in the next 30 days.

Description

Windows KDC Proxy Remote Code Execution Vulnerability

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

8.75%

94.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-197

Affected Software

Vendor	Product	Versions
Microsoft	Windows Server 2012	All versions
Microsoft	Windows Server 2012	r2
Microsoft	Windows Server 2016	< 10.0.14393.7515
Microsoft	Windows Server 2019	< 10.0.17763.6532
Microsoft	Windows Server 2022	< 10.0.20348.2849
Microsoft	Windows Server 2022 23h2	< 10.0.25398.1251
Microsoft	Windows Server 2025	< 10.0.26100.2314

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43639Patch, Vendor Advisory

Timeline

Published: Nov 12, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-43639?

Windows KDC Proxy Remote Code Execution Vulnerability

How severe is CVE-2024-43639?

CVE-2024-43639 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 8.75% probability of exploitation in the next 30 days.

How do I fix CVE-2024-43639?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-43639?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST