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CVE-2020-0951

Windows Defender Application Control Security Feature Bypass Vulnerability

Published: Sep 11, 2020Updated: Feb 23, 2026 Sources: CVE List NVD BDUNVD-CWE-noinfo
6.7MEDIUM
NVD MITRE
EPSS Score
7.0%
Top 6.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

<p>A security feature bypass vulnerability exists in Windows Defender Application Control (WDAC) which could allow an attacker to bypass WDAC enforcement. An attacker who successfully exploited this vulnerability could execute PowerShell commands that would be blocked by WDAC.</p> <p>To exploit the vulnerability, an attacker need administrator access on a local machine where PowerShell is running. The attacker could then connect to a PowerShell session and send commands to execute arbitrary code.</p> <p>The update addresses the vulnerability by correcting how PowerShell commands are validated when WDAC protection is enabled.</p>

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

NVD-CWE-noinfo

Affected Products

Microsoft Corp
commercial·USaka microsoft, microsoft corporation
powershellOn-prem
Operating Systems / windows
Windows 10 Version 1803On-premOS
Operating Systems / windows
Windows Server 2016 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2019 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 1903 (Server Core Installation)OS
Operating Systems / windows
PowerShell 7.0On-prem
DevTools & CI
PowerShell 7.1On-prem
Operating Systems / windows
and 30 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2020-0951?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0951
portal.msrc.microsoft.com
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0951&#13;
portal.msrc.microsoft.com
https://nvd.nist.gov/vuln/detail/CVE-2020-0951
nvd.nist.gov

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