CVE-2025-30399: Visual Studio 2022 RCE Vulnerability

CVE-2025-30399 is a remote code execution vulnerability in Microsoft Visual Studio 2022 caused by an untrusted search path flaw. Attackers can exploit this to execute unauthorized code over a network. This article covers technical details, affected versions, impact assessment, and mitigation strategies.

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.

bash

# Configuration example
Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser