Use-after-free in Windows Server - CVE-2025-49735
Published: July 8, 2025
Vulnerability identifier: #VU112521
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-49735
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Windows KDC Proxy Service (KPSSVC). A remote attacker can win a race condition and execute arbitrary code on the target system.
Affected software
Windows Server
How to mitigate CVE-2025-49735
Install updates from vendor's website.
Windows Server - addressed in versions 2012 R2 6.3.9600.22620, 2012 6.2.9200.25522, 2016 10.0.14393.8148, 2019 10.0.10240.21034, 2022 23H2 10.0.22621.5472, 2022 10.0.20348.3807, 2025 10.0.26200.4349