CVE-2020-0951: microsoft powershell
Vulnerability summary
CVE-2020-0951 is a high (CVSS 7.2) vulnerability in microsoft powershell. EPSS estimates a 6.58% chance of exploitation in the next 30 days, higher than 93.7% of scored vulnerabilities.
Timeline
- 11-09-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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>
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
6.58%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
-0.46 pp
From 7.04% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Microsoft21 products
- powershellEOL≥ 7.0, < 7.0.8 | ≥ 7.1, < 7.1.5 | 7.0.8
- powershell 7.0≥ 7.0.0, < 7.0.8
- powershell 7.1≥ 7.1.0, < 7.1.5
- windows_101607 | 1709 | 1803 | 1809 | 1903 | 1909 | 2004
- windows 10 version 1607≥ 10.0.0, < publication
1 vendor · 21 products
References
1 links
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0951X Refsource MISCPatchVendor Advisory