CVE-2025-30399 Overview
Untrusted search path in .NET and Visual Studio allows an unauthorized attacker to execute code over a network.
Critical Impact
This vulnerability allows attackers to execute unauthorized code remotely, potentially leading to full compromise of affected systems.
Affected Products
- Microsoft Visual Studio 2022
- Microsoft .NET
- Microsoft PowerShell
Discovery Timeline
- 2025-06-13T02:15:23.430 - CVE-2025-30399 published to NVD
- 2025-07-10T14:25:37.313 - Last updated in NVD database
Technical Details for CVE-2025-30399
Vulnerability Analysis
The vulnerability exploits an untrusted search path to execute malicious code by inserting a specially-crafted file into a location used by the affected software. Through this vector, an attacker can achieve unauthorized remote code execution.
Root Cause
The root cause of this vulnerability is the improper handling of file path searches, which allows the inclusion of untrusted directories in the search path.
Attack Vector
This vulnerability can be exploited over a network, allowing remote attackers to execute arbitrary code by delivering a malicious file to an untrusted directory included in the search path.
// Example exploitation code (sanitized)
int main() {
system("echo This is a placeholder for exploit code.");
return 0;
}
Detection Methods for CVE-2025-30399
Indicators of Compromise
- Unexpected file modifications in program directories
- Unusual use of command execution tools
- Anomalies in process creation linked to Visual Studio or .NET
Detection Strategies
Utilize file integrity monitoring to detect unauthorized file changes in system directories. Employ anomaly detection to identify unusual patterns in application behavior.
Monitoring Recommendations
Implement continuous monitoring of network traffic for signs of abnormal connections and inspect process execution flows for unauthorized actions. Leverage SentinelOne's behavioral analysis to detect and block exploit attempts in real-time.
How to Mitigate CVE-2025-30399
Immediate Actions Required
- Update to the latest version of Microsoft Visual Studio and .NET with security patches applied
- Restrict write permissions to critical directories
- Conduct thorough audits of system file paths for unauthorized changes
Patch Information
Visit Microsoft's official advisory to apply the necessary security patches and updates.
Workarounds
Consider implementing AppLocker or similar technologies to limit the execution of unauthorized files and scripts.
# Configuration example
Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
