Type Confusion in Windows Server - CVE-2025-21225
Published: January 14, 2025
Vulnerability identifier: #VU102670
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-21225
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a type confusion error in Windows Remote Desktop Gateway (RD Gateway). A remote attacker can pass specially crafted data to the application, trigger a type confusion error and cause a denial of service on the target system.
Affected software
Windows Server
How to mitigate CVE-2025-21225
Install updates from vendor's website.
Windows Server - addressed in versions 2016 10.0.14393.7699, 2016 10.0.14393.7785, 2019 10.0.17763.6775, 2022 23H2 10.0.25398.1369, 2022 10.0.20348.3091, 2025 10.0.26100.2894