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CVE-2026-45498

Microsoft Defender Denial of Service Vulnerability

Description

Microsoft Defender contains an unspecified vulnerability that allows for denial of service.

Recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA remediation due date for U.S. federal agencies: 3 Jun 2026.

Collected automatically from public sources. Verify affected versions and fixes in the vendor's notice before acting.