Protection Mechanism Failure in Windows and Windows Server - CVE-2025-49740
Published: July 9, 2025
Vulnerability identifier: #VU112701
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-49740
CWE-ID: CWE-693
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 bypass implemented security restrictions.
The vulnerability exists due to insufficient implementation of security measures in Windows SmartScreen. A remote attacker can trick a victim to launch malicious files and evade Mark of the Web (MOTW) defenses.
How to mitigate CVE-2025-49740
Install updates from vendor's website.