Detections
Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-26131

high Nessus Plugin ID 301849

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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.

 - Incorrect default permissions in .NET allows an authorized attacker to elevate privileges locally.
 (CVE-2026-26131)

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-2026-26131

https://ubuntu.com/security/CVE-2026-26131

Plugin Details

Severity: High

ID: 301849

File Name: unpatched_CVE_2026_26131.nasl

Version: 1.6

Type: Local

Agent: unix

Family: Misc.

Published: 3/11/2026

Updated: 3/24/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-26131

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:dotnet-host, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:dotnet7, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:redhat:enterprise_linux:dotnet10.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-10.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-dbg-10.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-targeting-pack-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-apphost-pack-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-hostfxr-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-dbg-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-10.0-source-built-artifacts, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-aot-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-dbg-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-targeting-pack-10.0, p-cpe:/a:redhat:enterprise_linux:dotnet-templates-10.0

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: 3/10/2026

Reference Information

CVE: CVE-2026-26131