CVE-2026-21256

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-21256
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.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21256 Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:-:*:*
History

11 Feb 2026, 21:37

Type Values Removed Values Added
CPE cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:-:*:*
First Time Microsoft
Microsoft visual Studio 2022
References () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21256 - () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21256 - Vendor Advisory

10 Feb 2026, 18:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-10 18:16

Updated : 2026-02-11 21:37

NVD link : CVE-2026-21256

Mitre link : CVE-2026-21256

CVE.ORG link : CVE-2026-21256

JSON object : View

Products Affected

microsoft

  • visual_studio_2022
CWE
CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

CWE-94

Improper Control of Generation of Code ('Code Injection')