CVE-2026-21523

HIGH

Microsoft Visual Studio Code < 1.109.2 - TOCTOU Race Condition

Title source: rule

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.

References (1)

Scores

CVSS v3 8.0
EPSS 0.0003
EPSS Percentile 6.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Classification

CWE
CWE-367
Status published

Affected Products (1)

microsoft/visual_studio_code < 1.109.2

Timeline

Published Feb 10, 2026
Tracked Since Feb 18, 2026