#VU115030 Type Confusion in Windows and Windows Server - CVE-2025-54109
Published: September 9, 2025
Vulnerability identifier: #VU115030
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-54109
CWE-ID: CWE-843
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error in Windows Defender Firewall Service. A local administrator can pass specially crafted data to the application, trigger a type confusion error and gain elevated privileges on the target system.
Remediation
Install updates from vendor's website.