HIGH 8.1 Microsoft
CVE-2026-45584
Microsoft Defender Remote Code Execution Vulnerability
Microsoft Security Update 2026-May: Microsoft Defender Remote Code Execution Vulnerability
Affected Products
- Microsoft Malware Protection Engine
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45584
- https://nvd.nist.gov/vuln/detail/CVE-2026-45584
This high severity vulnerability with a CVSS score of 8.1 was published on 2026-05-12 via Microsoft. Affected: Microsoft Malware Protection Engine.
vulnfeed aggregates 9166 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.