What is CVE-2018-8201?

CVE-2018-8201 is a medium-severity vulnerability in Microsoft Windows 10. CVSS score: 4.5/10. Published 2018-06-14.

How severe is CVE-2018-8201?

Medium severity. CVSS v3 base score is 4.5 out of 10.

Is CVE-2018-8201 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Microsoft Windows 10

CVE-2018-8201

A security feature bypass vulnerability exists in Device Guard that could allow an attacker to inject malicious code into a Windows PowerShell session, aka "Device Guard Code Integrity Policy Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8211, CVE-2018-8212, CVE-2018-8215, CVE-2018-8216, CVE-2018-8217, CVE-2018-8221.

Published 2018-06-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.5 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.019 (79.4th percentile), scored 2026-10-04.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Microsoft Windows 10 — versions 32-bit Systems, Version 1607 for 32-bit Systems, Version 1607 for x64-based Systems
Microsoft Windows 10 — versions 1607, 1703, 1709
Microsoft Windows 10 Servers — versions version 1709 (Server Core Installation), version 1803 (Server Core Installation)
Microsoft Windows Server 2016 — versions (Server Core installation)
Microsoft Windows Server 2016 — versions 1709, 1803

Public proof-of-concept exploits

References

www.securitytracker.com/id/1041098 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/104331 (VDB Entry, Third Party Advisory, vdb-entry)
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8201 (Patch, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2018-8201?: CVE-2018-8201 is a medium-severity vulnerability in Microsoft Windows 10. CVSS score: 4.5/10. Published 2018-06-14.
How severe is CVE-2018-8201?: Medium severity. CVSS v3 base score is 4.5 out of 10.
Is CVE-2018-8201 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.