CVE-2026-21257

HIGH
2026-02-10 [email protected]
8.0
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:02 vuln.today
CVE Published
Feb 10, 2026 - 18:16 nvd
HIGH 8.0

Tags

Github Command Injection AI / ML Visual Studio 2022

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.

Analysis

GitHub Copilot and Visual Studio 2022 contain a command injection vulnerability that allows authenticated users to execute arbitrary commands through improper sanitization of special elements. An attacker with valid credentials can leverage user interaction to escalate privileges and gain elevated access across the network. …

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Remediation

Within 24 hours: Inventory all GitHub Copilot and Visual Studio deployments and identify users with elevated system privileges. Within 7 days: Implement network segmentation to isolate development environments and restrict outbound connections from affected tools; disable Copilot features if possible pending patch availability. …

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Priority Score

40
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +40
POC: 0

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CVE-2026-21257 vulnerability details – vuln.today
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