CVE-2026-21523

HIGH EPSS 51.7%
Published Feb 10, 20264mo ago · Modified Jun 17, 20262w ago
8.0 CVSS 3.1
High
Find Similar
Published Feb 10, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.0
Exploitability
2.1
Impact
5.9
Vector string
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

Threat Intelligence

EPSS Exploit Probability
51.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-367

Affected Products 1

VendorProductVersionRange
microsoftvisual_studio_code* <1.109.2

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21523
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.