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CVE Number Vulnerability Product Severity Date
CVE-2026-45498 Microsoft Defender Denial of Service Vulnerability Microsoft Defender Low 29-05-2026

Technical Information

An unauthenticated attacker with local access could exploit an uncontrolled resource consumption vulnerability in Microsoft Defender by triggering excessive consumption of system resources, resulting in a denial-of-service condition that degrades or disrupts the availability of the affected system.

Patch release date: May 19, 2026
Further information on this vulnerability is available at : CVE-2026-45498

Affected Software

Microsoft Defender Antimalware Platform