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PowerShell Elevation of Privilege Vulnerability

High severity GitHub Reviewed Published Apr 16, 2022 to the GitHub Advisory Database • Updated Oct 13, 2025

Package

nuget Microsoft.PowerShell.SDK (NuGet)

Affected versions

>= 7.0.0-preview.1, < 7.0.10
>= 7.1.0-preview.1, < 7.1.7
>= 7.2.0-preview.1, < 7.2.3

Patched versions

7.0.10
7.1.7
7.2.3

Description

PowerShell Elevation of Privilege Vulnerability.

References

Published by the National Vulnerability Database Apr 15, 2022
Published to the GitHub Advisory Database Apr 16, 2022
Reviewed Oct 13, 2025
Last updated Oct 13, 2025

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(60th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2022-26788

GHSA ID

GHSA-q7x5-x7rr-2859

Source code

Credits

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