CVE-2024-43639

Windows KDC Proxy Remote Code Execution Vulnerability

Windows KDC Proxy Remote Code Execution Vulnerability

Affected

Microsoft · Windows Server 2025 · Windows Server 2025 (Server Core installation) · Windows Server 2019 · Windows Server 2019 (Server Core installation) · Windows Server 2022 · Windows Server 2022, 23H2 Edition (Server Core installation)

CVSS v3.1 MICROSOFT

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

EPSS

8.94% chance of exploitation in the next 30 days, 95th percentile

Published

2024-11-12

Updated

2025-07-08

Proof-of-concept exploits (1)

• HyperionGray/a-pocs-upon-you6★ · 2026-04-08

Security advisories

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43639

References

• CVE Record
• NVD entry

Related

• CVE-2024-0012
• CVE-2024-49112