External control of file name or path in .NET, Visual Studio, and Build Tools for Visual Studio allows an authorized attacker to perform spoofing over a network.

An update of the dotnet package has been released.

The Microsoft Visual Studio Products are missing security updates. They are, therefore, affected by network spoofing vulnerability where External control of file name or path in .NET, Visual Studio, and Build Tools for Visual Studio allows an authorized attacker to perform spoofing over a network.

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1008 advisory.

    External control of file name or path in .NET, Visual Studio, and Build Tools for Visual Studio allows an     authorized attacker to perform spoofing over a network. (CVE-2025-26646)

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

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

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:7601 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 9.0.106 and .NET Runtime 9.0.5.Security Fix(es):

    * dotnet: .NET and Visual Studio Spoofing Vulnerability (CVE-2025-26646)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:7599 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 8.0.116 and .NET Runtime 8.0.16.Security Fix(es):

    * dotnet: .NET and Visual Studio Spoofing Vulnerability (CVE-2025-26646)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:7598 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 8.0.116 and .NET Runtime 8.0.16.Security Fix(es):

    * dotnet: .NET and Visual Studio Spoofing Vulnerability (CVE-2025-26646)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:7603 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 8.0.116 and .NET Runtime 8.0.16.

    * CVE-2025-26646 .net: .NET and Visual Studio Spoofing VulnerabilitySecurity Fix(es):

    * dotnet: .NET and Visual Studio Spoofing Vulnerability (CVE-2025-26646)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:7600 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 9.0.106 and .NET Runtime 9.0.5.Security Fix(es):

    * dotnet: .NET and Visual Studio Spoofing Vulnerability (CVE-2025-26646)

    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 this issue 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 a vulnerability as referenced in the RHSA-2025:7589 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 8.0.116 and .NET Runtime 8.0.16.Security Fix(es):

    * dotnet: .NET and Visual Studio Spoofing Vulnerability (CVE-2025-26646)

    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 this issue 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 a vulnerability as referenced in the RHSA-2025:7571 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 9.0.106 and .NET Runtime 9.0.5.Security Fix(es):

    * dotnet: .NET and Visual Studio Spoofing Vulnerability (CVE-2025-26646)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-7598 advisory.

    [8.0.116-1.0.1]
    - Add support for Oracle Linux

    [8.0.116-1]
    - Update to .NET SDK 8.0.116 and Runtime 8.0.16
    - Resolves: RHEL-89448

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

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

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-7600 advisory.

    [9.0.106-1.0.1]
    - Add support for Oracle Linux

    [9.0.106-1]
    - Update to .NET SDK 9.0.106 and Runtime 9.0.5
    - Resolves: RHEL-89453

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

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

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:7598 advisory.

    * dotnet: .NET and Visual Studio Spoofing Vulnerability (CVE-2025-26646)

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

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

The remote Ubuntu 22.04 LTS / 24.04 LTS / 24.10 / 25.04 host has packages installed that are affected by a vulnerability as referenced in the USN-7509-1 advisory.

    It was discovered that .NET did not properly handle file names and paths under certain conditions. An     attacker could possibly use this issue to perform spoofing over a network.

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

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the ELSA-2025-7589 advisory.

    [8.0.116-1.0.1]
    - Add support for Oracle Linux

    [8.0.116-1]
    - Update to .NET SDK 8.0.116 and Runtime 8.0.16
    - Resolves: RHEL-89446

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

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

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:7571 advisory.

    * dotnet: .NET and Visual Studio Spoofing Vulnerability (CVE-2025-26646)

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

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

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:7589 advisory.

    * dotnet: .NET and Visual Studio Spoofing Vulnerability (CVE-2025-26646)

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

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the ELSA-2025-7571 advisory.

    [9.0.106-1.0.1]
    - Add support for Oracle Linux

    [9.0.106-1]
    - Update to .NET SDK 9.0.106 and Runtime 9.0.5
    - Resolves: RHEL-89451

    [9.0.105-2]
    - Update to .NET SDK 9.0.105 and Runtime 9.0.4
    - Resolves: RHEL-85279

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

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

The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the vendor advisory.

  - External control of file name or path in .NET, Visual Studio, and Build Tools for Visual Studio allows an     authorized attacker to perform spoofing over a network. (CVE-2025-26646)

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

ID	Name	Product	Family	Severity
238453	Photon OS 5.0: Dotnet PHSA-2025-5.0-0535	Nessus	PhotonOS Local Security Checks	high
238332	Security Updates for Microsoft Visual Studio 2022/2019 Products (May 2025)	Nessus	Windows : Microsoft Bulletins	high
238262	Amazon Linux 2023 : aspnetcore-runtime-8.0, aspnetcore-runtime-dbg-8.0, aspnetcore-targeting-pack-8.0 (ALAS2023-2025-1008)	Nessus	Amazon Linux Local Security Checks	high
237815	RHEL 10 : .NET 9.0 (RHSA-2025:7601)	Nessus	Red Hat Local Security Checks	high
237808	RHEL 10 : .NET 8.0 (RHSA-2025:7599)	Nessus	Red Hat Local Security Checks	high
237351	RHEL 9 : .NET 8.0 (RHSA-2025:7598)	Nessus	Red Hat Local Security Checks	high
237350	RHEL 9 : .NET 8.0 (RHSA-2025:7603)	Nessus	Red Hat Local Security Checks	high
237348	RHEL 9 : .NET 9.0 (RHSA-2025:7600)	Nessus	Red Hat Local Security Checks	high
237144	RHEL 8 : .NET 8.0 (RHSA-2025:7589)	Nessus	Red Hat Local Security Checks	high
237143	RHEL 8 : .NET 9.0 (RHSA-2025:7571)	Nessus	Red Hat Local Security Checks	high
237133	Oracle Linux 9 : .NET / 8.0 (ELSA-2025-7598)	Nessus	Oracle Linux Local Security Checks	high
237131	Oracle Linux 9 : .NET / 9.0 (ELSA-2025-7600)	Nessus	Oracle Linux Local Security Checks	high
237010	AlmaLinux 9 : .NET 8.0 (ALSA-2025:7598)	Nessus	Alma Linux Local Security Checks	high
236984	Ubuntu 22.04 LTS / 24.04 LTS / 24.10 / 25.04 : .NET vulnerability (USN-7509-1)	Nessus	Ubuntu Local Security Checks	high
236881	Oracle Linux 8 : .NET / 8.0 (ELSA-2025-7589)	Nessus	Oracle Linux Local Security Checks	high
236868	AlmaLinux 8 : .NET 9.0 (ALSA-2025:7571)	Nessus	Alma Linux Local Security Checks	high
236864	AlmaLinux 8 : .NET 8.0 (ALSA-2025:7589)	Nessus	Alma Linux Local Security Checks	high
236837	Oracle Linux 8 : .NET / 9.0 (ELSA-2025-7571)	Nessus	Oracle Linux Local Security Checks	high
235852	Security Update for Microsoft .NET Core (May 2025)	Nessus	Windows	high

Detections

Analytics

CVE-2025-26646

high

Tenable Plugins

high

high

high

high

high

high

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high

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