Threat Intelligence / CVE / CVE-2026-45498

CVE-2026-45498

CISA KEVRansomware

CVSS 4 (MEDIUM) · EPSS 4.1% · Published 2026-05-20

Microsoft Defender Denial of Service Vulnerability

CVSS v3 vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C

Weaknesses (CWE)

CWE-400

Threats tracking this CVE

CISA KEV Catalog Adds Seven Vulnerabilities (May 20, 2026) — Microsoft Defender CVE-2026-41091 (EoP) and CVE-2026-45498 (DoS) Headline Active Exploitation Batch — HIGH

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498

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