PowerShell is subject to remote code execution vulnerability

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

8.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Microsoft Security Advisory CVE-2020-0605: .NET Framework Remote Code Execution Vulnerability Executive Summary A remote code execution vulnerability exists in .NET software when the software fails to check the source markup of a file. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of .NET Framework. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user…

Published by the source

2 Feb 2024, 21:04 UTC

Last modified by the source

2 Feb 2024, 21:04 UTC

Source last checked

26 Oct 2026, 17:00 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-jcmq-5rrv-j2g4

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# Patch Next advisory brief: GHSA-jcmq-5rrv-j2g4

Advisory: PowerShell is subject to remote code execution vulnerability
IDs: GHSA-jcmq-5rrv-j2g4
Record: https://patchnext.com/advisories/ghsa-jcmq-5rrv-j2g4 (revision 1, source checked 26 Oct 2026, 17:00 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: powershell 7.0.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- NuGet powershell: affected < 7.0.0; fixed in 7.0.0

## Suggested inspection (read-only)
- NuGet powershell: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on powershell.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-jcmq-5rrv-j2g4 (GitHub-reviewed advisory GHSA-jcmq-5rrv-j2g4 lists affected ranges: NuGet powershell >=0 <7.0.0)

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