CVE-2026-55011EPSS p38.2%

CVE-2026-55011CVE-2026-55011

microsoft / malware_protection_engine

Description

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

Scoring

CVSS 7.8 ()
VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS0.47% probability of exploitation · percentile 38.2% · 2026-10-05T12:00:23Z
Last modified2026-07-24
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.