CVE-2020-0951 Windows Defender Application Control Security Feature Bypass Vulnerability
An attacker with admin access can bypass Windows Defender Application Control to execute blocked PowerShell commands, requiring a security patch.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-0951?
CVE-2020-0951 is a medium-severity vulnerability in Microsoft Windows 10, published on 11 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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>
Which versions are affected by CVE-2020-0951?
1 open source package ship an affected version, including powershell. It affects 4 products.
| Package | Affected | Fixed in |
|---|---|---|
powershell Bitnami | From 7.0.0 to 7.0.8 | 7.0.8, 7.1.5 |
Products include Microsoft Powershell, Microsoft Windows 10, Microsoft Windows Server 2016, Microsoft Windows Server 2019.
How do I fix CVE-2020-0951?
Upgrade powershell to a fixed version for your release line: 7.0.8 or 7.1.5.
Is CVE-2020-0951 being exploited?
There is no known exploitation of CVE-2020-0951 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10
- CVE-2018-8327 Code injection in PowerShell Editor
- CVE-2026-96251 Microsoft PowerShell Remote Code Execution Vulnerability
- CVE-2026-70337 Microsoft PowerShell Remote Code Execution Vulnerability
- CVE-2022-41076 PowerShell Remote Code Execution Vulnerability
- CVE-2026-50523 Microsoft PowerShell Remote Code Execution Vulnerability
Sources
Also known as BIT-powershell-2020-0951, GHSA-72c6-539v-q92f.