CVE-2026-55012
High
Description
Integer overflow or wraparound in Microsoft Defender allows an unauthorized attacker to execute code locally.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Microsoft Malware Protection Engine
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-190Integer overflowCWE-122CWE-122
How to fix
Update
- microsoft malware_protection_engine1.1.26060.3008 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft malware_protection_engine | v < 1.1.26060.3008 | 1.1.26060.3008 |
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