CVE DatabaseCVE-2026-45498
CVE-2026-454987.5/HIGHCISA KEVCWE-400
CVE-2026-45498 Technical Vulnerability Analysis & Patch Advisory (CVSS 7.5)
Affected Vendors
security-advisory
Affected Components
enterprise-software
Published Date
2026-05-20
Executive & SecOps Summary
SECOPS ASSESSMENTAffected Scope
Systems running unpatched versions impacted by CVE-2026-45498
Impact
Microsoft Defender Denial of Service Vulnerability...
Mitigation
Apply vendor security patches and restrict external network exposure.
Affected Products & Version Scope
All unpatched versions listed in the official NVD CPE configurations
Remediation & Live Workaround Commands
PATCH & WORKAROUNDRemediation Steps
- Upgrade to the latest patched release from the vendor.
- Apply virtual patching or network segmentation until maintenance windows allow full patching.
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Launch Hands-On Security LabTechnical Root Cause & Exploitation Mechanics
Technical Overview
Microsoft Defender Denial of Service Vulnerability
- CVSS Score: 7.5 (HIGH)
- CWE IDs: CWE-400
Official Vendor Advisories & References
NVD Original English Description
Microsoft Defender Denial of Service Vulnerability
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