PT-2026-58254 · Microsoft · Malware Protection Engine

CVE-2026-55012

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Published

2026-07-14

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Updated

2026-07-14

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Integer overflow or wraparound in Microsoft Defender allows an unauthorized attacker to execute code locally.

Fix

Integer Overflow

Heap Based Buffer Overflow

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Weakness Enumeration

CWE-190CWE-122

Related Identifiers

CVE-2026-55012

Affected Products

Malware Protection Engine