CVE-2026-21256
Analyzed Analyzed - Analysis Complete
Command Injection in GitHub Copilot and Visual Studio Enables Remote Code Execution

Publication date: 2026-02-10

Last updated on: 2026-02-11

Assigner: Microsoft Corporation

Description
Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio allows an unauthorized attacker to execute code over a network.
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Meta Information
Published
2026-02-10
Last Modified
2026-02-11
Generated
2026-06-16
AI Q&A
2026-02-10
EPSS Evaluated
2026-06-15
NVD
CVE-2026-21256
EUVD
EUVD-2026-7325
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft visual_studio_2022 From 17.14.0 (inc) to 17.14.26 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
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Executive Summary

This vulnerability is a command injection flaw found in GitHub Copilot and Visual Studio. It occurs due to improper neutralization of special elements used in commands, which allows an unauthorized attacker to execute arbitrary code remotely over a network.

Impact Analysis

The vulnerability can have a severe impact as it allows remote code execution by an unauthorized attacker. This means an attacker could potentially run malicious code on your system, leading to full compromise of confidentiality, integrity, and availability of affected systems.

Compliance Impact

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