Linux Distros Unpatched Vulnerability : CVE-2026-6842

low Nessus Plugin ID 309643

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 nano. In environments with permissive umask settings, a local attacker can exploit incorrect directory permissions (0777 instead of 0700) for the `~/.local` directory. This allows the attacker to inject a malicious `.desktop` launcher, which could lead to unintended actions or information disclosure if the launcher is subsequently processed. (CVE-2026-6842)

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-2026-6842

https://security-tracker.debian.org/tracker/CVE-2026-6842

https://ubuntu.com/security/CVE-2026-6842

Plugin Details

Severity: Low

ID: 309643

File Name: unpatched_CVE_2026_6842.nasl

Version: 1.6

Type: Local

Agent: unix

Family: Misc.

Published: 4/22/2026

Updated: 5/1/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.9

CVSS v2

Risk Factor: Low

Base Score: 1

Temporal Score: 0.9

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

CVSS Score Source: CVE-2026-6842

CVSS v3

Risk Factor: Low

Base Score: 2.5

Temporal Score: 2.3

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:redhat:enterprise_linux:6, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:redhat:enterprise_linux:nano, cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:redhat:enterprise_linux:9, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:centos:centos:8, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:debian:debian_linux:13.0, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:centos:centos:nano, cpe:/o:centos:centos:7, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:redhat:enterprise_linux:7, cpe:/o:canonical:ubuntu_linux:26.04, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:debian:debian_linux:nano, p-cpe:/a:canonical:ubuntu_linux:nano

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: 4/22/2026

Reference Information

CVE: CVE-2026-6842