URGENT: Microsoft patches 3 critical VS Code Copilot vulnerabilities including CVE-2025-62222 RCE flaw. Update immediately. Complete security advisory with m...
What Was Patched
Microsoft has released fixes for three critical vulnerabilities affecting the GitHub Copilot integration in VS Code. The most serious of these, tracked as CVE-2025-62222, is a remote code execution (RCE) flaw — the class of bug that can let an attacker run arbitrary commands on a developer's machine rather than just leak information or crash the editor. Because Copilot runs inside the editor with the same permissions as your development environment, an exploited RCE can reach your source code, local credentials, environment variables, and anything else the editor can touch.
The other two vulnerabilities in this batch are also rated critical. Microsoft has not gated the fixes behind opt-in flags; they ship as part of the updated Copilot extension and editor, so the correct response is to apply the update rather than to work around individual issues.
Why This Deserves Immediate Action
AI coding assistants are an attractive target precisely because of where they sit. They process untrusted input constantly — repository contents, pasted snippets, prompt text, and model responses — and they act on that input inside a trusted context. A flaw that turns any of those inputs into executed code collapses the boundary between "reading a file" and "running whatever the file says."
An RCE in this position is worse than an average editor bug for a simple reason: developer machines are high-value. They typically hold SSH keys, cloud tokens, package registry credentials, and write access to codebases that flow straight into production. Compromising one workstation can be a stepping stone into an entire organization, which is why a Copilot RCE warrants the same urgency you'd give a server-side flaw.
How to Update Safely
The fix is delivered through the editor's normal update path, so the goal is to confirm you're actually running the patched build rather than assuming auto-update handled it. Work through these steps:
- Update VS Code itself to the latest release, then restart the editor so the new binary is loaded.
- Update the Copilot extension from the Extensions view and confirm it reports the current version, not a cached older one.
- Fully quit and relaunch — background processes from the old extension can keep running until every window closes.
- Roll the update across all developer machines and any shared or CI environments where the extension is installed, not just your primary laptop.
If you manage a team, treat this as a fleet-wide task. A single un-updated machine still carries the risk, and attackers only need one reachable target. Verify version numbers centrally where you can rather than trusting that everyone patched.
Reducing Exposure Going Forward
Patching closes these specific holes, but the underlying lesson is durable: an AI assistant that reads untrusted content and acts inside your environment is part of your attack surface. Keep editor extensions on a short update cadence, subscribe to security advisories for the tools you embed in your workflow, and apply least-privilege thinking to the credentials your development machine holds so a future compromise has less to reach.
For now, the priority is narrow and clear: update VS Code and the Copilot extension, confirm the patched versions are running everywhere, and restart. Do it before your next coding session rather than after.