RCE in Microsoft Visual Studio 2022 Version 17.14
CVE-2026-21257
Improper neutralization of special elements used in a command ('command injection') in GitHub Copilot and Visual Studio allows an authorized attacker to elevate privileges over a network.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.2% 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: 0.009 · change: +0.001
Affected products
- Microsoft Visual Studio 2022 Version 17.14 — versions 17.14.0
- Microsoft Visual Studio 2026 Version 18.3 — versions 18.3.0
- Microsoft Visual Studio 2022
Weakness classification (CWE)
References
- GitHub Copilot and Visual Studio Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-21257?
- CVE-2026-21257 is a high-severity vulnerability in Microsoft Visual Studio 2022 Version 17.14, classified under Command Injection. CVSS score: 8.0/10. Published 2026-02-10.
- How severe is CVE-2026-21257?
- High severity. CVSS v3 base score is 8.0 out of 10.