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Description

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

PUBLISHED Reserved 2026-05-12 | Published 2026-05-20 | Updated 2026-05-20 | Assigner microsoft




HIGH: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-122: Heap-based Buffer Overflow

Product status

-
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45584 (Microsoft Defender Remote Code Execution Vulnerability) vendor-advisory patch

cve.org (CVE-2026-45584)

nvd.nist.gov (CVE-2026-45584)

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