CVE-2026-41091

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

  • Published May 20, 2026
  • CVSS 7.8 high
  • 0.4% chance of exploitation in the next 30 days (EPSS)
  • In CISA's Known Exploited Vulnerabilities catalog

Affected software

CVE-2026-41091 at the National Vulnerability Database