CVE-2013-3154: Microsoft Windows 7

Medium severity, CVSS 6.9. EPSS: 1.8% chance of exploitation in the next 30 days.

The signature-update functionality in Windows Defender on Microsoft Windows 7 and Windows Server 2008 R2 relies on an incorrect pathname, which allows local users to gain privileges via a Trojan horse application in the %SYSTEMDRIVE% top-level directory, aka "Microsoft Windows 7 Defender Improper Pathname Vulnerability."

Affected products

• Microsoft Windows 7: affected versions not specified
• Microsoft Windows Defender: any version
• Microsoft Windows Server 2008: any version

Published 2013-07-10. Last modified 2026-06-16.