CVE-2026-70264: Microsoft Windows Defender

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.

Affected products

• Microsoft Windows Defender: before 1.1.26090.9 (fixed in 1.1.26090.9)

Published 2026-10-13. Last modified 2026-10-13.