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CVE-2026-21523

nvd nist
Published: Feb 10, 2026Modified: Jun 17, 2026

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8.0
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Exploitability: 2.1 / Impact: 5.9
Source: secure@microsoft.com (Secondary)

Description

Time-of-check time-of-use (toctou) race condition in GitHub Copilot and Visual Studio allows an authorized attacker to execute code over a network.

Affected (1)

Microsoft
1 product
Visual Studio Code
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Visual Studio Code
Before 1.109.2

Related CWEs

CWE-367
Time-of-check Time-of-use (TOCTOU) Race Condition
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

References (1)

Source: secure@microsoft.com
Vendor Advisory

Timeline

No history available yet.