CVE-2026-45498

MEDIUM4.0

CISA KEV

Published 2026-05-20 · Updated 2026-06-17 · Source secure@microsoft.com

Description

Microsoft Defender Denial of Service Vulnerability

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-400

CISA Known-Exploited Vulnerability

Product: Microsoft — Defender

Name: Microsoft Defender Denial of Service Vulnerability

Date added: 2026-05-20 · Due: 2026-06-03

Required 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.

References

View on NVD

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