How severe is GHSA-r4mw-gxf7-vxr9?

GHSA-r4mw-gxf7-vxr9 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by GHSA-r4mw-gxf7-vxr9?

GHSA-r4mw-gxf7-vxr9 affects the following packages: Microsoft.WindowsDesktop.App.Ref (NuGet), Microsoft.WindowsDesktop.App.Ref (NuGet), Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet), Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet), Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet), Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet). Ecosystems affected: NuGet.

How do I fix GHSA-r4mw-gxf7-vxr9?

Update Microsoft.WindowsDesktop.App.Ref to 3.0.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r4mw-gxf7-vxr9 is resolved across your whole dependency graph.

How do I detect GHSA-r4mw-gxf7-vxr9 in my NuGet dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for Microsoft.WindowsDesktop.App.Ref, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-r4mw-gxf7-vxr9 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is GHSA-r4mw-gxf7-vxr9 actively exploited in the wild?

No public exploit code has been indexed for GHSA-r4mw-gxf7-vxr9 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-r4mw-gxf7-vxr9?

GHSA-r4mw-gxf7-vxr9 has an EPSS (Exploit Prediction Scoring System) score of 18.3%, placing it in the 97th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score warrants monitoring and prompt remediation.

What type of vulnerability is GHSA-r4mw-gxf7-vxr9?

GHSA-r4mw-gxf7-vxr9 is classified as Improper Input Validation (CWE-20). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-r4mw-gxf7-vxr9 published, and has it been updated?

GHSA-r4mw-gxf7-vxr9 was published on May 24, 2022 and was last updated on November 8, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

.NET

.NET NuGet

Not in CISA KEV

HIGH severity

Remote code execution in Microsoft.WindowsDesktop.App.RefGHSA-r4mw-gxf7-vxr9

HIGH

GHSA-r4mw-gxf7-vxr9 is a high-severity (CVSS 8.8) Improper Input Validation vulnerability in Microsoft.WindowsDesktop.App.Ref. EPSS puts its 30-day exploitation probability at 18.3% (97th percentile). A fix is available for Microsoft.WindowsDesktop.App.Ref — see the affected versions and patch details below.

Also known asCVE-2020-0606

Published

May 24, 2022

Updated

Nov 8, 2023

Affected

6 pkgs

Patched

6 / 6

Exploits

None indexed

Exploitation data as of Nov 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

18.3%probability of exploitation in next 30 days

Moderate Risk+1.16%

Lower risk than most CVEs97th percentile — riskier than 97% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

6 pkgs affected

.NETMicrosoft.WindowsDesktop.App.Ref.NETMicrosoft.WindowsDesktop.App.Ref.NETMicrosoft.WindowsDesktop.App.Runtime.win-x86.NETMicrosoft.WindowsDesktop.App.Runtime.win-x86.NETMicrosoft.WindowsDesktop.App.Runtime.win-x64.NETMicrosoft.WindowsDesktop.App.Runtime.win-x64

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

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, aka '.NET Framework Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0605.

Affected Packages

6 total 6 fixed

Ecosystem	Package	Vulnerable range	Fix
.NETNuGet	`Microsoft.WindowsDesktop.App.Ref`	≥ 3.0.1&&< 3.0.2	3.0.2`dotnet add package Microsoft.WindowsDesktop.App.Ref --version 3.0.2`
.NETNuGet	`Microsoft.WindowsDesktop.App.Ref`	≥ 3.1.0&&< 3.1.1	3.1.1`dotnet add package Microsoft.WindowsDesktop.App.Ref --version 3.1.1`
.NETNuGet	`Microsoft.WindowsDesktop.App.Runtime.win-x86`	≥ 3.0.0&&< 3.0.2	3.0.2`dotnet add package Microsoft.WindowsDesktop.App.Runtime.win-x86 --version 3.0.2`
.NETNuGet	`Microsoft.WindowsDesktop.App.Runtime.win-x86`	≥ 3.1.0&&< 3.1.11	3.1.11`dotnet add package Microsoft.WindowsDesktop.App.Runtime.win-x86 --version 3.1.11`
.NETNuGet	`Microsoft.WindowsDesktop.App.Runtime.win-x64`	≥ 3.0.0&&< 3.0.2	3.0.2`dotnet add package Microsoft.WindowsDesktop.App.Runtime.win-x64 --version 3.0.2`
.NETNuGet	`Microsoft.WindowsDesktop.App.Runtime.win-x64`	≥ 3.1.0&&< 3.1.11	3.1.11`dotnet add package Microsoft.WindowsDesktop.App.Runtime.win-x64 --version 3.1.11`

Affected Products

2 products · 23 configurations

Application

.net coremicrosoft

2 versions

3.03.1

Application

.net frameworkmicrosoft

11 versions

3.03.53.5.14.5.24.64.6.14.6.24.74.7.14.7.24.8

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for Microsoft.WindowsDesktop.App.Ref, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update Microsoft.WindowsDesktop.App.Ref to 3.0.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r4mw-gxf7-vxr9 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is GHSA-r4mw-gxf7-vxr9 in your dependencies?

Find it across NuGet, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

8.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

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

CWE Classification

CWE-20Improper Input Validation

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

May 24, 2022

Last updated

Nov 8, 2023

Identifiers

GHSA-r4mw-gxf7-vxr9

References

Advisorynvd.nist.gov · CVE 2020 0606 Webgithub.com Webgithub.com Webportal.msrc.microsoft.com · CVE 2020 0606

Related vulnerabilities

This CVE is high severity; 6 of 8 other CVEs affecting Microsoft.WindowsDesktop.App.Runtime.win-x86 are rated as high or higher (top: high).

CVE-2026-70035CVE-2026-83520CVE-2026-96229CVE-2026-87697CVE-2026-85363CVE-2026-70174CVE-2026-96232CVE-2026-96234

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedNov 8, 2023

Remote code execution in Microsoft.WindowsDesktop.App.RefGHSA-r4mw-gxf7-vxr9

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is GHSA-r4mw-gxf7-vxr9 in your dependencies?