Untrusted search path in Microsoft products - CVE-2025-30399

Vulnerability identifier: #VU111028

CSH Severity: High

CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-30399

CWE-ID: CWE-426

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to usage of an untrusted search path in .NET and Visual Studio. A remote attacker can execute arbitrary code on the target system.

.NET for macOS
.NET for Linux
Visual Studio
.NET
Tenable Identity Exposure (formerly Tenable.ad)
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for IBM z Systems
Ubuntu
dotnet8 (Ubuntu package)
dotnet8.0 (Red Hat package)
dotnet9.0 (Red Hat package)

Install updates from vendor's website.

.NET for macOS - addressed in versions 8.0.17 8.0.17, 9.0.6 9.0.6
.NET for Linux - addressed in versions 8.0.17 8.0.17, 9.0.6 9.0.6
.NET - addressed in versions 8.0.17, 9.0.6
Visual Studio - addressed in versions 17.8.22 17.8.22, 17.10.16 17.10.16, 17.12.9 17.12.9
Tenable Identity Exposure (formerly Tenable.ad) - update to 3.77.12
dotnet8 (Ubuntu package) - addressed in versions 8.0.17-0ubuntu1~22.04.1, 8.0.17-0ubuntu1~24.04.1, 8.0.17-0ubuntu1~24.10.1, 8.0.17-0ubuntu1~25.04.1, 8.0.117-0ubuntu1~22.04.1, 8.0.117-0ubuntu1~24.04.1, 8.0.117-0ubuntu1~24.10.1, 8.0.117-0ubuntu1~25.04.1, 8.0.117-8.0.17-0ubuntu1~22.04.1, 8.0.117-8.0.17-0ubuntu1~24.04.1, 8.0.117-8.0.17-0ubuntu1~24.10.1, 8.0.117-8.0.17-0ubuntu1~25.04.1, 9.0.6-0ubuntu1~24.10.1, 9.0.6-0ubuntu1~25.04.1, 9.0.107-0ubuntu1~24.10.1, 9.0.107-0ubuntu1~25.04.1, 9.0.107-9.0.6-0ubuntu1~24.10.1, 9.0.107-9.0.6-0ubuntu1~25.04.1
dotnet8.0 (Red Hat package) - addressed in versions 8.0.117-1.el8_10, 8.0.117-1.el9_6, 8.0.117-1.el10_0
dotnet9.0 (Red Hat package) - addressed in versions 9.0.107-1.el9_6, 9.0.107-1.el10_0

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-30399

• Remote code execution in Microsoft .NET and Visual Studio
• Red Hat Enterprise Linux 8 update for .NET 8.0
• Red Hat Enterprise Linux 10 update for .NET 8.0
• Ubuntu update for dotnet8
• Red Hat Enterprise Linux 9 update for .NET 8.0
• Red Hat Enterprise Linux 10 update for .NET 9.0
• Red Hat Enterprise Linux 9 update for .NET 9.0
• Multiple vulnerabilities in Tenable Identity Exposure