CVE-2026-45498
MI
Microsoft Defender
Microsoft Defender Denial of Service Vulnerability
What it is
Microsoft Defender contains an unspecified vulnerability that allows for denial of service.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor notices and references
- msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-45498
- nvd.nist.gov/vuln/detail/CVE-2026-45498
Description and required action as published by CISA. Full record at NVD.
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