CVE-2026-45584

Microsoft · Published May 26, 2026

8.1

CVSS v3.1

HIGH

Patch availableGet patch

Description

Microsoft Defender Remote Code Execution Vulnerability. Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.

Affected Products

Microsoft Malware Protection Engine

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C