CVE-2026-21523: high-severity vulnerability in Microsoft Visual Studio Code
GitHub Copilot and Visual Studio Code Remote Code Execution Vulnerability
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8epss 0.8%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Microsoft Visual Studio Code CoPilot Chat ExtensionMicrosoft · Visual Studio CodeRelated CVEs — Microsoft Visual Studio Code
In the same product, most dangerous first.
CVE-2022-41034HIGHVisual Studio Code Remote Code Execution VulnerabilityEPSS 67.5%CVE-2022-30129HIGHVisual Studio Code Remote Code Execution VulnerabilityEPSS 41.6%CVE-2019-0728—CVE-2019-0728EPSS 27.7%CVE-2021-43891HIGHVisual Studio Code Remote Code Execution VulnerabilityEPSS 13.3%CVE-2020-1416—CVE-2020-1416EPSS 5.9%CVE-2020-16881HIGHVisual Studio JSON Remote Code Execution VulnerabilityEPSS 5.4%