CVE-2018-8435

lowpriority · track · 17EPSS 0.014 · 72 %ileEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.36% (72nd) EPSS
CVSS 2.3 · low
Is it mine?
23 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

4.4
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.3–4.4

v2.02.3lowAV:A/AC:M/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 4.4 · impact 2.9
v3.04.2mediumCVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 0.5 · impact 3.6
v3.03.9lowCVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
v3.14.4mediumAV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:Nsecondary · FSTEC (BDU) RU
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-331USprimaryCWE-269US
03

affected products (23)

Products and version ranges known to be affected.

showing 20 of 23
04

also known as (4)

Other names and identifiers for this entity.

05

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bdunvdNVDCVE.orgMITRE
published 2018-09-13modified 2026-06-17
07

references (10)

External citations — patches, advisories, analysis.

scry

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