CVE-2026-21257: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') in Microsoft Microsoft Visual Studio 2022 version 17.14
Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio allows an authorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-77) involves improper neutralization of special elements in commands within Microsoft Visual Studio 2022 version 17.14, specifically impacting GitHub Copilot and Visual Studio. An authorized attacker can exploit this flaw to perform command injection, resulting in elevated privileges remotely. The CVSS 3.1 score of 8.0 reflects high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized attacker to elevate privileges over a network, compromising confidentiality, integrity, and availability of the affected system. This could enable execution of arbitrary commands with elevated rights, potentially leading to full system compromise within the scope of the affected Visual Studio environment.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21257. Since this is not a cloud service, remediation requires updating the affected Visual Studio installation to the fixed version.
CVE-2026-21257: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') in Microsoft Microsoft Visual Studio 2022 version 17.14
Description
Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio allows an authorized attacker to elevate privileges over a network.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-77) involves improper neutralization of special elements in commands within Microsoft Visual Studio 2022 version 17.14, specifically impacting GitHub Copilot and Visual Studio. An authorized attacker can exploit this flaw to perform command injection, resulting in elevated privileges remotely. The CVSS 3.1 score of 8.0 reflects high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized attacker to elevate privileges over a network, compromising confidentiality, integrity, and availability of the affected system. This could enable execution of arbitrary commands with elevated rights, potentially leading to full system compromise within the scope of the affected Visual Studio environment.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21257. Since this is not a cloud service, remediation requires updating the affected Visual Studio installation to the fixed version.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-11T21:02:05.737Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21257","vendor":"Microsoft"}]
Threat ID: 698b76014b57a58fa120a050
Added to database: 2/10/2026, 6:16:33 PM
Last enriched: 5/12/2026, 5:13:23 AM
Last updated: 5/22/2026, 4:21:55 AM
Views: 98
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