Microsoft Defender vulnerabilities

3 advisories, 3 actively exploited. Last update: May 20, 2026.

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CVE-2026-41091May 20, 2026High 7.8Exploited
Microsoft Defender Link Following Vulnerability
CVE-2026-45498May 20, 2026Medium 4Exploited
Microsoft Defender Denial of Service Vulnerability
CVE-2026-33825April 22, 2026High 7.8Exploited
Microsoft Defender Insufficient Granularity of Access Control Vulnerability