The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:8469 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 8.0.126 and .NET Runtime 8.0.26.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.

Detections

Analytics

RHEL 9 : .NET 8.0 (RHSA-2026:8469)

high Nessus Plugin ID 306768

Version 1.4

Version 1.3

Version 1.1

Version 1.4 May 8, 2026, 7:45 AM CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H") CVSSv3 score source (set to "CVE-2026-33116") Plugin Feed: 202605080745
Version 1.3 Apr 20, 2026, 10:26 PM Plugin metadata (Add IAVM Info) Reference Plugin Feed: 202604202226
Version 1.1 Apr 17, 2026, 5:33 AM New Plugin Feed: 202604170533