VULNERABILITY INTELLIGENCE

CVE-2018-8435

CVSS score4.2 MEDIUM

EPSS probability1.36%

CISA KEVNot currently listed

Published2018-09-13

Last modified2026-06-17

CVSS vectorCVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N

Description

A security feature bypass vulnerability exists when Windows Hyper-V BIOS loader fails to provide a high-entropy source, aka "Windows Hyper-V Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.

Weakness classification

CWE-331: Insufficient Entropy

Primary references

secure@microsoft.com — Third Party Advisory, VDB Entry
secure@microsoft.com — Third Party Advisory, VDB Entry
secure@microsoft.com — Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory