CVE-2025-26631
📋 TL;DR
This vulnerability in Visual Studio Code allows an authorized attacker to execute arbitrary code with elevated privileges by exploiting an uncontrolled search path element. It affects users who have local access to systems running vulnerable versions of Visual Studio Code. The attacker must already have some level of access to the system to exploit this vulnerability.
💻 Affected Systems
- Visual Studio Code
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker with local access could execute arbitrary code with SYSTEM/root privileges, potentially taking full control of the system, installing persistent malware, or accessing sensitive data.
Likely Case
An authorized user or malware with local access could elevate privileges to install additional software, modify system configurations, or bypass security controls.
If Mitigated
With proper access controls and least privilege principles, the impact is limited to the user's own environment without system-wide compromise.
🎯 Exploit Status
Exploitation requires local access and some level of user privileges. The attacker needs to place malicious DLLs in specific locations that VS Code will load from.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Visual Studio Code 1.95.0 and later
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26631
Restart Required: No
Instructions:
1. Open Visual Studio Code. 2. Click on Help menu. 3. Select Check for Updates. 4. Install update to version 1.95.0 or later. 5. Restart Visual Studio Code if prompted.
🔧 Temporary Workarounds
Restrict DLL loading paths
allConfigure system policies to restrict where applications can load DLLs/shared libraries from
Use application whitelisting
allImplement application control policies to prevent execution of unauthorized binaries
🧯 If You Can't Patch
- Implement strict access controls to limit who can run Visual Studio Code on sensitive systems
- Monitor for suspicious DLL loading behavior and file creation in VS Code directories
🔍 How to Verify
Check if Vulnerable:
Check Visual Studio Code version: Open VS Code, go to Help > About. If version is below 1.95.0, the system is vulnerable.Check Version:
code --versionVerify Fix Applied:
Verify Visual Studio Code version is 1.95.0 or higher in Help > About menu.📡 Detection & Monitoring
Log Indicators:
- Unusual DLL loading from non-standard paths by VS Code process
- File creation events in VS Code installation directories
Network Indicators:
- None - this is a local privilege escalation vulnerability
SIEM Query:
Process Creation where Image contains 'code.exe' AND CommandLine contains unusual DLL loading patterns