CVE-2026-45498

MEDIUM KEV

Microsoft Defender Denial of Service Vulnerability

Title source: cna
STIX 2.1

Description

Microsoft Defender Denial of Service Vulnerability

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Microsoft Defender Denial of Service Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498

Scores

CVSS v3 4.0
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact partial

Details

CISA KEV 2026-05-20
VulnCheck KEV 2026-05-19
Status published
Products (1)
Microsoft/Microsoft Defender Antimalware Platform -
Published May 20, 2026
KEV Added May 20, 2026
Tracked Since May 20, 2026