Name: CVE-2026-45584: Heap-based Buffer Overflow
Creator: Rapid7
Published: 2026-05-20T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-45584, CWE-122, CVSS 8.1, EPSS 0.00707

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

CVSS Details

CVSS 3.1 Base Score: 8.1
CVSS 3.1 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)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Windows Defender	—	Upgrade Microsoft Windows Defender to the latest version	May 27, 2026	May 19, 2026

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CVSS Details

Covered by Rapid7

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