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CVE-2026-55011

7.8 high SSVC exploitation: none Analyzed
NVD · CVE.org

Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.8 · microsoftNVD modified 2026-10-24 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:microsoft:malware_protection_engine:*:*:*:*:*:*:*:*

References 1