Acceptance of Extraneous Untrusted Data With Trusted Data in Windows and Windows Server - CVE-2025-29842
Published: May 13, 2025
Vulnerability identifier: #VU109103
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-29842
CWE-ID: CWE-349
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to improper input validation in UrlMon. A remote attacker can trick a victim to open a specially crafted file and bypass a security feature.
How to mitigate CVE-2025-29842
Install updates from vendor's website.