What is CVE-2026-121662?

CVE-2026-121662 is a high-severity vulnerability in Microsoft Visual Studio Code, classified under Command Injection. CVSS score: 8.6/10. Published 2026-11-10.

How severe is CVE-2026-121662?

High severity. CVSS v3 base score is 8.6 out of 10.

RCE in Microsoft Visual Studio Code

CVE-2026-121662

Improper neutralization of special elements used in a command ('command injection') in Visual Studio Code allows an unauthorized attacker to execute code locally.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-11-10 · last modified 2026-11-10.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Microsoft Visual Studio Code

Weakness classification (CWE)

CWE-77 — Command Injection

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-121662 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-121662?: CVE-2026-121662 is a high-severity vulnerability in Microsoft Visual Studio Code, classified under Command Injection. CVSS score: 8.6/10. Published 2026-11-10.
How severe is CVE-2026-121662?: High severity. CVSS v3 base score is 8.6 out of 10.