The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - .NET Remote Code Execution Vulnerability (CVE-2025-21171)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:0382 advisory.

    * dotnet: .NET Remote Code Execution Vulnerability (CVE-2025-21171)
      * dotnet: .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)
      * dotnet: .NET Elevation of Privilege Vulnerability (CVE-2025-21173)
      * dotnet: .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21176)


    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.Security Fix(es):

      * dotnet: .NET Elevation of Privilege Vulnerability (CVE-2025-21173)
      * dotnet: .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21176)
      * dotnet: .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)
      * dotnet: .NET Remote Code Execution Vulnerability (CVE-2025-21171)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Microsoft .NET 9 Core installed on the remote host is prior to 9.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the vendor advisory.

  - .NET Remote Code Execution Vulnerability (CVE-2025-21171)

  - .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)

  - .NET Elevation of Privilege Vulnerability (CVE-2025-21173)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:0382 advisory.

    * dotnet: .NET Remote Code Execution Vulnerability (CVE-2025-21171)
    * dotnet: .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)
    * dotnet: .NET Elevation of Privilege Vulnerability (CVE-2025-21173)
    * dotnet: .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21176)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.Security Fix(es):

    * dotnet: .NET Elevation of Privilege Vulnerability (CVE-2025-21173)

    * dotnet: .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21176)

    * dotnet: .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)

    * dotnet: .NET Remote Code Execution Vulnerability (CVE-2025-21171)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Microsoft Visual Studio Products are missing security updates. They are, therefore, affected by multiple vulnerabilities, including:

  - An undisclosed .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21176)

  - An undisclosed Visual Studio Remote Code Execution Vulnerability (CVE-2025-21178)

  - An undisclosed Visual Studio Elevation of Privilege Vulnerability (CVE-2025-21405)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Microsoft Visual Studio Products are missing security updates. They are, therefore, affected by multiple vulnerabilities, including:

  - An undisclosed .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21176)

  - An undisclosed Visual Studio Remote Code Execution Vulnerability (CVE-2025-21178)

  - An undisclosed .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-0487787cb9 advisory.

    This is the January 2025 security and bugfix release for .NET 9.0. It updates the SDK to version 9.0.102     and Runtime to version 9.0.1.

    Release Notes: https://github.com/dotnet/core/blob/main/release-notes/9.0/9.0.1/9.0.1.md

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 41 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-2eb86c0cbf advisory.

    This is the January 2025 security and bugfix release for .NET 9.0. It updates the SDK to version 9.0.102     and Runtime to version 9.0.1.

    Release Notes: https://github.com/dotnet/core/blob/main/release-notes/9.0/9.0.1/9.0.1.md

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:0382 advisory.

    .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new     APIs, and it includes a CLR implementation.

    New versions of .NET that address a security vulnerability are now available. The updated versions are     .NET SDK 9.0.102 and .NET Runtime 9.0.1.

    Security Fix(es):

    * dotnet: .NET Remote Code Execution Vulnerability (CVE-2025-21171)
    * dotnet: .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)
    * dotnet: .NET Elevation of Privilege Vulnerability (CVE-2025-21173)
    * dotnet: .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21176)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.Security Fix(es):

    * dotnet: .NET Elevation of Privilege Vulnerability (CVE-2025-21173)

    * dotnet: .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21176)

    * dotnet: .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)

    * dotnet: .NET Remote Code Execution Vulnerability (CVE-2025-21171)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 24.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7210-1 advisory.

    It was discovered that .NET did not properly handle input provided to its Convert.TryToHexString method.
    An attacker could possibly use this issue to execute arbitrary code. (CVE-2025-21171)

    It was discovered that .NET did not properly handle an integer overflow when processing certain specially     crafted files. An attacker could possibly use this issue to execute arbitrary code. (CVE-2025-21172)

    Daniel Plaisted and Noah Gilson discovered that .NET insecurely handled temporary file usage which could     result in malicious package dependency injection. An attacker could possibly use this issue to elevate     privileges. (CVE-2025-21173)

    It was discovered that .NET did not properly perform input data validation when processing certain     specially crafted files. An attacker could possibly use this issue to execute arbitrary code.
    (CVE-2025-21176)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-0382 advisory.

  - .NET Remote Code Execution Vulnerability (CVE-2025-21171)

  - .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21176)

  - .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2025-21172)

  - .NET Elevation of Privilege Vulnerability (CVE-2025-21173)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
260554	Linux Distros Unpatched Vulnerability : CVE-2025-21171	Nessus	Misc.	9/2/2025	9/2/2025	high
214378	AlmaLinux 8 : .NET 9.0 (ALSA-2025:0382)	Nessus	Alma Linux Local Security Checks	1/18/2025	7/11/2025	high
214130	Security Update for Microsoft .NET 9 Core (January 2025)	Nessus	Windows	1/14/2025	7/11/2025	high
216299	RockyLinux 8 : .NET 9.0 (RLSA-2025:0382)	Nessus	Rocky Linux Local Security Checks	2/14/2025	7/11/2025	high
214120	Security Updates for Microsoft Visual Studio 2022 17.12 Products (January 2025)	Nessus	Windows : Microsoft Bulletins	1/14/2025	9/17/2025	high
214126	Security Updates for Microsoft Visual Studio 2022 17.6 / 17.8 / 17.10 Products (January 2025)	Nessus	Windows : Microsoft Bulletins	1/14/2025	9/17/2025	high
214747	Fedora 40 : dotnet9.0 (2025-0487787cb9)	Nessus	Fedora Local Security Checks	1/29/2025	7/11/2025	high
214749	Fedora 41 : dotnet9.0 (2025-2eb86c0cbf)	Nessus	Fedora Local Security Checks	1/29/2025	7/11/2025	high
214279	RHEL 8 : .NET 9.0 (RHSA-2025:0382)	Nessus	Red Hat Local Security Checks	1/16/2025	7/11/2025	high
214328	Ubuntu 22.04 LTS / 24.04 LTS / 24.10 : .NET vulnerabilities (USN-7210-1)	Nessus	Ubuntu Local Security Checks	1/17/2025	7/11/2025	high
214351	Oracle Linux 8 : .NET / 9.0 (ELSA-2025-0382)	Nessus	Oracle Linux Local Security Checks	1/18/2025	9/12/2025	high

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