Linux Distros Unpatched Vulnerability : CVE-2026-79992

high Nessus Plugin ID 339522

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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.

- A flaw was found in Emacs TRAMP. A local attacker could exploit this vulnerability by processing maliciously crafted filenames. This occurs because TRAMP concatenates login arguments without proper sanitization, which are then passed to a local shell. Successful exploitation could lead to arbitrary code execution. (CVE-2026-79992)

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

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 339522

File Name: unpatched_CVE_2026_79992.nasl

Version: 1.5

Type: Local

Agent: unix

Family: Misc.

Published: 8/25/2026

Updated: 9/11/2026

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: Medium

Score: 4.9

Percentile: 58.2

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.9

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

CVSS Score Source: CVE-2026-79992

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: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, 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:7, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:debian:debian_linux:14.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:emacs24, p-cpe:/a:canonical:ubuntu_linux:emacs25, p-cpe:/a:canonical:ubuntu_linux:emacs, p-cpe:/a:canonical:ubuntu_linux:xemacs21-packages, p-cpe:/a:canonical:ubuntu_linux:xemacs21, p-cpe:/a:centos:centos:emacs-common, p-cpe:/a:centos:centos:emacs-el, p-cpe:/a:centos:centos:emacs-filesystem, p-cpe:/a:centos:centos:emacs-lucid, p-cpe:/a:centos:centos:emacs-nox, p-cpe:/a:centos:centos:emacs-nw, p-cpe:/a:centos:centos:emacs-terminal, p-cpe:/a:centos:centos:emacs, p-cpe:/a:debian:debian_linux:emacs, p-cpe:/a:redhat:enterprise_linux:emacs-common, p-cpe:/a:redhat:enterprise_linux:emacs-el, p-cpe:/a:redhat:enterprise_linux:emacs-filesystem, p-cpe:/a:redhat:enterprise_linux:emacs-lucid, p-cpe:/a:redhat:enterprise_linux:emacs-nox, p-cpe:/a:redhat:enterprise_linux:emacs-nw, p-cpe:/a:redhat:enterprise_linux:emacs-terminal, p-cpe:/a:redhat:enterprise_linux:emacs

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: 8/25/2026

Reference Information

CVE: CVE-2026-79992

Detections

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