Detections
Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-58649

medium Nessus Plugin ID 343912

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

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

 - Origin validation error in .NET allows an unauthorized attacker to disclose information over a network.
 (CVE-2026-58649)

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

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-58649

https://ubuntu.com/security/CVE-2026-58649

Plugin Details

Severity: Medium

ID: 343912

File Name: unpatched_CVE_2026_58649.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 9/8/2026

Updated: 9/9/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.8

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2026-58649

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:centos:centos:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:dotnet10, p-cpe:/a:canonical:ubuntu_linux:dotnet6, p-cpe:/a:canonical:ubuntu_linux:dotnet7, p-cpe:/a:canonical:ubuntu_linux:dotnet8, p-cpe:/a:centos:centos:aspnetcore-runtime-10.0, p-cpe:/a:centos:centos:aspnetcore-runtime-8.0, p-cpe:/a:centos:centos:aspnetcore-runtime-9.0, p-cpe:/a:centos:centos:aspnetcore-runtime-dbg-10.0, p-cpe:/a:centos:centos:aspnetcore-runtime-dbg-8.0, p-cpe:/a:centos:centos:aspnetcore-runtime-dbg-9.0, p-cpe:/a:centos:centos:aspnetcore-targeting-pack-10.0, p-cpe:/a:centos:centos:aspnetcore-targeting-pack-8.0, p-cpe:/a:centos:centos:aspnetcore-targeting-pack-9.0, p-cpe:/a:centos:centos:dotnet-apphost-pack-10.0, p-cpe:/a:centos:centos:dotnet-apphost-pack-8.0, p-cpe:/a:centos:centos:dotnet-apphost-pack-9.0, p-cpe:/a:centos:centos:dotnet-host, p-cpe:/a:centos:centos:dotnet-hostfxr-10.0, p-cpe:/a:centos:centos:dotnet-hostfxr-8.0, p-cpe:/a:centos:centos:dotnet-hostfxr-9.0, p-cpe:/a:centos:centos:dotnet-runtime-10.0, p-cpe:/a:centos:centos:dotnet-runtime-8.0, p-cpe:/a:centos:centos:dotnet-runtime-9.0, p-cpe:/a:centos:centos:dotnet-runtime-dbg-10.0, p-cpe:/a:centos:centos:dotnet-runtime-dbg-8.0, p-cpe:/a:centos:centos:dotnet-runtime-dbg-9.0, p-cpe:/a:centos:centos:dotnet-sdk-10.0-source-built-artifacts, p-cpe:/a:centos:centos:dotnet-sdk-10.0, p-cpe:/a:centos:centos:dotnet-sdk-8.0-source-built-artifacts, p-cpe:/a:centos:centos:dotnet-sdk-8.0, p-cpe:/a:centos:centos:dotnet-sdk-9.0-source-built-artifacts, p-cpe:/a:centos:centos:dotnet-sdk-9.0, p-cpe:/a:centos:centos:dotnet-sdk-aot-10.0, p-cpe:/a:centos:centos:dotnet-sdk-aot-9.0, p-cpe:/a:centos:centos:dotnet-sdk-dbg-10.0, p-cpe:/a:centos:centos:dotnet-sdk-dbg-8.0, p-cpe:/a:centos:centos:dotnet-sdk-dbg-9.0, p-cpe:/a:centos:centos:dotnet-targeting-pack-10.0, p-cpe:/a:centos:centos:dotnet-targeting-pack-8.0, p-cpe:/a:centos:centos:dotnet-targeting-pack-9.0, p-cpe:/a:centos:centos:dotnet-templates-10.0, p-cpe:/a:centos:centos:dotnet-templates-8.0, p-cpe:/a:centos:centos:dotnet-templates-9.0, p-cpe:/a:centos:centos:dotnet10.0, p-cpe:/a:centos:centos:dotnet8.0, p-cpe:/a:centos:centos:dotnet9.0, p-cpe:/a:centos:centos:dotnet, p-cpe:/a:centos:centos:netstandard-targeting-pack-2.1, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-10.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-8.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-9.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-dbg-10.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-dbg-8.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-dbg-9.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-targeting-pack-10.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-targeting-pack-8.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-targeting-pack-9.0, p-cpe:/a:redhat:enterprise_linux:dotnet-apphost-pack-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-apphost-pack-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-apphost-pack-9.0, p-cpe:/a:redhat:enterprise_linux:dotnet-host, p-cpe:/a:redhat:enterprise_linux:dotnet-hostfxr-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-hostfxr-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-hostfxr-9.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-9.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-dbg-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-dbg-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-dbg-9.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-10.0-source-built-artifacts, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-8.0-source-built-artifacts, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-9.0-source-built-artifacts, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-9.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-aot-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-aot-9.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-dbg-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-dbg-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-dbg-9.0, p-cpe:/a:redhat:enterprise_linux:dotnet-targeting-pack-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-targeting-pack-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-targeting-pack-9.0, p-cpe:/a:redhat:enterprise_linux:dotnet-templates-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-templates-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-templates-9.0, p-cpe:/a:redhat:enterprise_linux:dotnet10.0, p-cpe:/a:redhat:enterprise_linux:dotnet8.0, p-cpe:/a:redhat:enterprise_linux:dotnet9.0, p-cpe:/a:redhat:enterprise_linux:dotnet, p-cpe:/a:redhat:enterprise_linux:netstandard-targeting-pack-2.1

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 9/8/2026

Reference Information

CVE: CVE-2026-58649