[ GLSA 202608-21 ] GNU Emacs: Arbitrary code execution

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Gentoo Linux Security Advisory                           GLSA 202608-21
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                                           https://security.gentoo.org/
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 Severity: High
    Title: GNU Emacs: Arbitrary code execution
     Date: August 24, 2026
     Bugs: #981157
       ID: 202608-21

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Synopsis
========

A vulnerability has been discovered in GNU Emacs allowing arbitrary code
execution.

Background
==========

GNU Emacs is the extensible, customizable, self-documenting real-time
display editor.

Affected packages
=================

Package            Vulnerable     Unaffected
-----------------  -------------  --------------
app-editors/emacs  < 27.2-r4:27   >= 27.2-r4:27
                   < 28.2-r22:28  >= 28.2-r22:28
                   < 29.4-r10:29  >= 29.4-r10:29
                   < 30.2-r6:30   >= 30.2-r6:30

Description
===========

A vulnerability has been discovered in GNU Emacs. Please review the CVE
identifier referenced below for details.

Impact
======

An attacker could achieve arbitrary code execution by tricking a user
into opening a file or directory with a malicious filename via TRAMP.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GNU Emacs users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-editors/emacs-30.2-r6"

References
==========


Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202608-21

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2026 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5

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