Quick answers
- Is CVE-2026-121665 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-121665 being exploited in the wild.
- How severe is CVE-2026-121665?
- High severity, with a CVSS score of 8.8, published 10 November 2026.
- Which products and versions are affected?
- Microsoft Visual Studio Code.
- Is there a fix for CVE-2026-121665?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-121665 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-121665?
- Check whether you run Microsoft Visual Studio Code. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A trust boundary violation in Visual Studio Code permits an attacker to bypass a security feature via network-based attack without authentication. The vulnerability allows unauthorized access across trust boundaries, potentially exposing sensitive development artifacts or permitting lateral movement. The reported CVSS 8.8 score indicates high impact availability, integrity, or confidentiality damage.
Affected products
- Microsoft Visual Studio Code
Timeline
- 2026-11-10: disclosed