Vulnerability in Microsoft Visual Studio Code Copilot Chat Extension
CVE-2025-21264
Files or directories accessible to external parties in Visual Studio Code allows an unauthorized attacker to bypass a security feature locally.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.008 (55.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000
Affected products
- Microsoft Visual Studio Code Copilot Chat Extension — versions 0.27.0
- Microsoft Visual Studio Code — versions 1.0.0
- Microsoft Visual Studio Code
Weakness classification (CWE)
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21264 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-21264?
- CVE-2025-21264 is a high-severity vulnerability in Microsoft Visual Studio Code Copilot Chat Extension, classified under Files or Directories Accessible to External Parties. CVSS score: 7.1/10. Published 2025-05-13.
- How severe is CVE-2025-21264?
- High severity. CVSS v3 base score is 7.1 out of 10.