{"id":86491,"date":"2026-02-18T00:14:17","date_gmt":"2026-02-18T00:14:17","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-30399-untrusted-search-path-vulnerability-in-net-and-visual-studio","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-30399-untrusted-search-path-vulnerability-in-net-and-visual-studio\/","title":{"rendered":"CVE-2025-30399: Untrusted Search Path Vulnerability in .NET and Visual Studio<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

CVE-2025-30399 is a critical vulnerability in .NET and Visual Studio that could allow an attacker to execute code over a network, potentially leading to system compromise or data leakage. This issue is particularly concerning for organizations and developers who are utilizing these platforms as it could enable unauthorized access to sensitive systems and data.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-30399
\nSeverity: High (CVSS: 7.5)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System Compromise, Data Leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

.NET | All versions prior to patch
\nVisual Studio | All versions prior to patch<\/p>\n

How the Exploit Works<\/strong><\/p>\n

This vulnerability is due to an untrusted search path flaw in .NET and Visual Studio. An attacker can exploit this vulnerability by tricking the software into loading and executing malicious code from an untrusted location over a network without requiring user interaction. This could potentially lead to system compromise or data leakage.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

The following is a conceptual example of how the vulnerability might be exploited. This is not an actual exploit code but a demonstration of the method an attacker might use.<\/p>\n

# The attacker prepares the malicious code\necho \"echo 'System Compromised'\" > exploit.sh\n# The attacker hosts the malicious code on an untrusted network location\nmv exploit.sh \/\/untrusted\/network\/location\n# The attacker tricks .NET or Visual Studio into loading and executing the malicious code\n.NET run \/\/untrusted\/network\/location\/exploit.sh<\/code><\/pre>\n
Please note this is a simplification of the actual exploit, which can be highly complex and adaptable to specific targets.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To mitigate this vulnerability, it is recommended to apply the vendor-provided patch as soon as possible. In the interim, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These systems can help detect and block attempts to exploit this vulnerability. However, they should not replace the need to apply the vendor-provided patch.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-30399 is a critical vulnerability in .NET and Visual Studio that could allow an attacker to execute code over a network, potentially leading to system compromise or data leakage. This issue is particularly concerning for organizations and developers who are utilizing these platforms as it could enable unauthorized access to sensitive systems and data. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86491","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t