CVE-2026-47292: Visual Studio Code Privilege Escalation Vulnerability

Technical summary

CVE-2026-47292 involves the inclusion of functionality from an untrusted control sphere in Visual Studio Code, mapped to CWE-829 (Inclusion of Functionality from Untrusted Control Sphere) and CWE-94 (Improper Control of Generation of Code). The vulnerability has a CVSS 3.1 score of 7.8 (HIGH), with a local attack vector, low complexity, no privilege requirement, and user interaction needed. The attack results in complete compromise of confidentiality, integrity, and availability on the affected system. The flaw allows a local attacker to escalate privileges by executing untrusted code within the VS Code runtime, potentially via a malicious extension, untrusted workspace configuration, or crafted file that triggers automatic processing.

Business impact

For organizations using VS Code as their standard development environment, this vulnerability could enable insider threats or supply-chain attacks. An attacker gaining elevated privileges on a developer's machine could access sensitive source code repositories, exfiltrate credentials stored in the development environment, inject backdoors into software builds, or pivot laterally within corporate networks. The combination of user interaction and privilege escalation makes this particularly dangerous in shared development environments or when developers work with untrusted code repositories or third-party extensions.

Affected systems

Microsoft Visual Studio Code is the only affected product. All versions prior to the patch (verify against the official Microsoft security advisory for specific version numbers) are vulnerable. The risk applies to VS Code installations on Windows, macOS, and Linux systems where users have administrative or elevated permissions, or where the application runs with sufficient privilege to be exploited for further privilege escalation.

Exploitability

Exploitation requires local access and user interaction—an attacker must convince or trick a user into opening a malicious file, installing an untrusted extension, or cloning a repository with crafted configurations. The low complexity and lack of required prior privileges lower the bar for attackers with basic local system access. However, this is not an unauthenticated remote vulnerability; it does not spread via network propagation alone. The attack surface includes third-party extensions, workspace settings, and file associations that trigger VS Code automation.

Remediation

Microsoft has released patches to address this vulnerability. Users should update Visual Studio Code to the patched version immediately via the built-in update mechanism or by downloading the latest version from the official Microsoft website. Additionally, organizations should enforce policies restricting the installation of extensions to trusted sources, configure workspace trust settings to require explicit user approval for untrusted workspaces, and educate developers to avoid opening untrusted files or cloning code from unverified sources.

Patch guidance

Apply the latest available update for Visual Studio Code through the Help > Check for Updates menu (Windows/Linux) or Code > Check for Updates (macOS). Verify the patch version against the official Microsoft security advisory to confirm the specific build number that resolves CVE-2026-47292. For enterprise deployments, use centralized update management tools or software deployment systems to ensure all instances are patched. Test the update in a non-production environment first if your organization has critical development workflows dependent on VS Code stability.

Detection guidance

Monitor for unexpected VS Code process execution with elevated privileges, particularly child processes spawned from the IDE that access system files or registry. Log authentication events on shared development systems to detect unauthorized privilege escalation. Review VS Code extension installation logs and workspace configuration files for suspicious or newly added entries. Endpoint Detection and Response (EDR) tools should flag suspicious .code-workspace files or extension manifests that attempt to execute code outside the normal extension sandbox. Check for unsigned or malicious extensions installed within development environments.

Why prioritize this

While this vulnerability has a HIGH CVSS score (7.8) and requires user interaction, it is prioritized based on the critical role VS Code plays in modern software development. The privilege escalation component makes it attractive to sophisticated threat actors targeting development teams. The lack of current KEV (Known Exploited Vulnerability) status does not diminish urgency—organizations should assume active exploitation is possible and patch before adversaries develop reliable attacks. Development environments are high-value targets for supply-chain attacks, making this a business-critical remediation.

Risk score, explained

The CVSS 3.1 score of 7.8 reflects the severe impact (complete confidentiality, integrity, and availability compromise) combined with local attack vector and user interaction requirements. The score is elevated due to the unrestricted scope—an attacker gaining privilege elevation on a developer's machine effectively gains control over the system's security posture. However, the score is not critical (9.0+) because exploitation requires local access and user interaction, limiting opportunistic remote attacks. Organizations with strong endpoint security and user awareness training can reduce risk, but the underlying vulnerability severity remains high.

Frequently asked questions