It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1629 advisory.

    Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.
    (CVE-2026-26171)

    Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing     over a network. (CVE-2026-32178)

    Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over     a network. (CVE-2026-32203)

    Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an     unauthorized attacker to deny service over a network. (CVE-2026-33116)

Tenable has extracted the preceding description block directly from the tested product 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Loop with unreachable exit condition ('infinite loop') in .NET, .NET Framework, Visual Studio allows an     unauthorized attacker to deny service over a network. (CVE-2026-33116)

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:13282 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 9.0.116 and .NET Runtime 9.0.15.Security Fix(es):

    * dotnet: .NET: Security Bypass and Denial of Service Vulnerability (CVE-2026-26171)

    * dotnet: .NET: Denial of Service via stack overflow (CVE-2026-32203)

    * dotnet: .NET: Denial of Service via Infinite Recursion in XmlDecryptionTransform (CVE-2026-33116)

    * dotnet: Dotnet: SMTP Command Injection and Header Injection via MailAddress parsing flaw     (CVE-2026-32178)

    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 / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8176-1 advisory.

    Ludvig Pedersen discovered that the System.Security.Cryptography.Xml library in .NET incorrectly handled     certain XML inputs. An attacker could possibly use this issue to consume excessive resources, resulting in     a denial of service. (CVE-2026-33116, CVE-2026-26171)

    Ludvig Pedersen and Kevin Jones discovered that the System.Security.Cryptography.Xml library in .NET     incorrectly handled certain XML inputs. An attacker could possibly use this issue to cause .NET to crash,     resulting in a denial of service. (CVE-2026-32203)

    Ludvig Pedersen discovered that the System.Net.Mail component in .NET incorrectly handled certain inputs.
    An attacker could possibly use this issue to perform a network spoofing attack. (CVE-2026-32178)

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 RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:8472 advisory.

    * dotnet: .NET: Security Bypass and Denial of Service Vulnerability (CVE-2026-26171)

    * dotnet: .NET: Denial of Service via stack overflow (CVE-2026-32203)

    * dotnet: .NET: Denial of Service via Infinite Recursion in XmlDecryptionTransform (CVE-2026-33116)

    * dotnet: Dotnet: SMTP Command Injection and Header Injection via MailAddress parsing flaw     (CVE-2026-32178)

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 remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:8472 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 9.0.116 and .NET Runtime 9.0.15.Security Fix(es):

    * dotnet: .NET: Security Bypass and Denial of Service Vulnerability (CVE-2026-26171)

    * dotnet: .NET: Denial of Service via stack overflow (CVE-2026-32203)

    * dotnet: .NET: Denial of Service via Infinite Recursion in XmlDecryptionTransform (CVE-2026-33116)

    * dotnet: Dotnet: SMTP Command Injection and Header Injection via MailAddress parsing flaw     (CVE-2026-32178)

    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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:8474 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 9.0.116 and .NET Runtime 9.0.15.Security Fix(es):

    * dotnet: .NET: Security Bypass and Denial of Service Vulnerability (CVE-2026-26171)

    * dotnet: .NET: Denial of Service via stack overflow (CVE-2026-32203)

    * dotnet: .NET: Denial of Service via Infinite Recursion in XmlDecryptionTransform (CVE-2026-33116)

    * dotnet: Dotnet: SMTP Command Injection and Header Injection via MailAddress parsing flaw     (CVE-2026-32178)

    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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:8475 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 9.0.116 and .NET Runtime 9.0.15.Security Fix(es):

    * dotnet: .NET: Security Bypass and Denial of Service Vulnerability (CVE-2026-26171)

    * dotnet: .NET: Denial of Service via stack overflow (CVE-2026-32203)

    * dotnet: .NET: Denial of Service via Infinite Recursion in XmlDecryptionTransform (CVE-2026-33116)

    * dotnet: Dotnet: SMTP Command Injection and Header Injection via MailAddress parsing flaw     (CVE-2026-32178)

    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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-8471 advisory.

    [10.0.106-1.0.1]
    - Add support for Oracle Linux

    [10.0.106-1]
    - Update to .NET SDK 10.0.106 and Runtime 10.0.6
    - Resolves: RHEL-163384

Tenable has extracted the preceding description block directly from the Oracle 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 Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-8467 advisory.

    [10.0.106-1.0.1]
    - Add support for Oracle Linux

    [10.0.106-1]
    - Update to .NET SDK 10.0.106 and Runtime 10.0.6
    - Resolves: RHEL-163385

Tenable has extracted the preceding description block directly from the Oracle 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 Microsoft .NET Core installations on the remote host are missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - Denial of Service (CVE-2026-26171, CVE-2026-32203, CVE-2026-33116)

  - Improper neutralization of special elements in .NET allows an unauthorized attacker to perform spoofing over a network. (CVE-2026-32178)

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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-8469 advisory.

    [8.0.126-1.0.1]
    - Add support for Oracle Linux

    [8.0.126-1]
    - Update to .NET SDK 8.0.126 and Runtime 8.0.26
    - Resolves: RHEL-163416

Tenable has extracted the preceding description block directly from the Oracle 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 AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:8472 advisory.

    * dotnet: .NET: Security Bypass and Denial of Service Vulnerability (CVE-2026-26171)
      * dotnet: .NET: Denial of Service via stack overflow (CVE-2026-32203)
      * dotnet: .NET: Denial of Service via Infinite Recursion in XmlDecryptionTransform (CVE-2026-33116)
      * dotnet: Dotnet: SMTP Command Injection and Header Injection via MailAddress parsing flaw     (CVE-2026-32178)

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.

ID	Name	Product	Family	Published	Updated	Severity
311302	Amazon Linux 2023 : aspnetcore-runtime-8.0, aspnetcore-runtime-dbg-8.0, aspnetcore-targeting-pack-8.0 (ALAS2023-2026-1629)	Nessus	Amazon Linux Local Security Checks	4/30/2026	5/7/2026	high
306472	Linux Distros Unpatched Vulnerability : CVE-2026-33116	Nessus	Misc.	4/14/2026	5/6/2026	high
311827	RHEL 9 : .NET 9.0 (RHSA-2026:13282)	Nessus	Red Hat Local Security Checks	5/4/2026	5/7/2026	high
306722	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : .NET vulnerabilities (USN-8176-1)	Nessus	Ubuntu Local Security Checks	4/16/2026	5/8/2026	high
307472	RockyLinux 10 : .NET 9.0 (RLSA-2026:8472)	Nessus	Rocky Linux Local Security Checks	4/18/2026	5/7/2026	high
306763	RHEL 10 : .NET 9.0 (RHSA-2026:8472)	Nessus	Red Hat Local Security Checks	4/16/2026	5/8/2026	high
306771	RHEL 9 : .NET 9.0 (RHSA-2026:8474)	Nessus	Red Hat Local Security Checks	4/16/2026	5/8/2026	high
306792	RHEL 8 : .NET 9.0 (RHSA-2026:8475)	Nessus	Red Hat Local Security Checks	4/16/2026	5/8/2026	high
307015	Oracle Linux 9 : .NET / 10.0 (ELSA-2026-8471)	Nessus	Oracle Linux Local Security Checks	4/17/2026	5/8/2026	high
307016	Oracle Linux 10 : .NET / 10.0 (ELSA-2026-8467)	Nessus	Oracle Linux Local Security Checks	4/17/2026	5/8/2026	high
307353	Microsoft .NET Core (April 2026)	Nessus	Windows	4/17/2026	5/8/2026	high
307664	Oracle Linux 9 : .NET / 8.0 (ELSA-2026-8469)	Nessus	Oracle Linux Local Security Checks	4/20/2026	5/7/2026	high
309078	AlmaLinux 10 : .NET 9.0 (ALSA-2026:8472)	Nessus	Alma Linux Local Security Checks	4/21/2026	5/7/2026	high

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