What is CVE-2026-45584?

CVE-2026-45584 is a security advisory published by Microsoft Security Response Center (MSRC) with Remote Code Execution severity. Microsoft Defender Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-45584 cover?

CVE-2026-45584 covers the following CVE IDs: CVE-2026-45584. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-45584?

CVE-2026-45584 has a CVSS v3 base score of 8.1, published by Microsoft Security Response Center (MSRC).

CVE-2026-45584Remote Code ExecutionCVSS 8.1

Microsoft Defender Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 22, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-45584 →

📋 Description

<p>Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.</p>