Debian dsa-6468 : emacs - security update

high Nessus Plugin ID 340870

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6468 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6468-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff August 26, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : emacs CVE ID : CVE-2026-6861 Debian Bug : 1129189

Two security issues were discovered in GNU Emacs, which could result in the execution of arbitrary code when opening a malformed file and denial of service when processing malformed PBM/PPM/PGM images.

For the stable distribution (trixie), this problem has been fixed in version 1:30.1+1-6+deb13u1.

We recommend that you upgrade your emacs packages.

For the detailed security status of emacs please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/emacs

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the emacs packages.

Plugin Details

Severity: High

ID: 340870

File Name: debian_DSA-6468.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 8/26/2026

Updated: 8/26/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.64

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-6861

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:emacs-bin-common, p-cpe:/a:debian:debian_linux:emacs-common, p-cpe:/a:debian:debian_linux:emacs-el, p-cpe:/a:debian:debian_linux:emacs-gtk, p-cpe:/a:debian:debian_linux:emacs-lucid, p-cpe:/a:debian:debian_linux:emacs-nox, p-cpe:/a:debian:debian_linux:emacs-pgtk, p-cpe:/a:debian:debian_linux:emacs

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 8/26/2026

Vulnerability Publication Date: 4/14/2026

Reference Information

CVE: CVE-2026-6861

Detections

Analytics