All CVE records
CVE-2026-45498 — Microsoft Defender Denial of Service Vulnerability
CISA KEV listed
Added May 20, 2026 Remediate by June 3, 2026
Description
Microsoft Defender contains an unspecified vulnerability that allows for denial of service.
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.
Notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-45498 ; https://nvd.nist.gov/vuln/detail/CVE-2026-45498
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