MEDIUM 4.0 Microsoft PoC
CVE-2026-45498
Microsoft Defender Denial of Service Vulnerability
Microsoft Security Update 2026-May: Microsoft Defender Denial of Service Vulnerability
Affected Products
- Microsoft Defender Antimalware Platform
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498
- https://nvd.nist.gov/vuln/detail/CVE-2026-45498
This medium severity vulnerability with a CVSS score of 4.0 was published on 2026-05-12 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. EPSS score: 63.1% (top 1% of all CVEs by exploitation probability). Affected: Microsoft Defender Antimalware Platform.
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