CVE-2020-0951 json
Windows Defender Application Control Security Feature Bypass Vulnerability
published 2020-09-11 6 y ago modified 2026-09-08 2 mo ago also BIT-powershell-2020-0951 , EUVD-2020-2419
- cvss
- 6.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 6.6%
- EPSS 6.6% chance of exploitation in 30 days, percentile 93%
- public exploits
- 0
- none known
Summary
<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>
Patch / fix
- bitnami powershell 7.0.8, 7.1.5
- Microsoft PowerShell 7.0 7.0.8
- Microsoft PowerShell 7.1 7.1.5
Exploit prediction
6.58% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C |
| CNA | 3.1 | 6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
| OSV | 3.1 | 6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | powershell | >=7.0.0, <7.0.8 >=7.1.0, <7.1.5 >=7.0.8, <=7.0.8 |
7.0.8 7.1.5 |
Affected products
- Microsoft Windows 10 Version 1803
- Microsoft Windows 10 Version 1809
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows 10 Version 1909
- Microsoft Windows Server, version 1909 (Server Core installation)
- Microsoft Windows 10 Version 1709 for 32-bit Systems
- Microsoft Windows 10 Version 1709
- Microsoft Windows 10 Version 1903 for 32-bit Systems
- Microsoft Windows 10 Version 1903 for x64-based Systems
- Microsoft Windows 10 Version 1903 for ARM64-based Systems
- Microsoft Windows Server, version 1903 (Server Core installation)
- Microsoft Windows 10 Version 2004
- Microsoft Windows Server version 2004
- Microsoft Windows 10 Version 1607
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core installation)
- Microsoft PowerShell 7.0
- Microsoft PowerShell 7.1
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2020-0951
patch, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-0951
web
Sources
- CVE List CVE-2020-0951
- NVD CVE-2020-0951
- OSV BIT-powershell-2020-0951
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