CVE Database›CVE-2022-45939

CVE-2022-45939

emacs: ctags local command execution vulnerability

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Severity

Moderate

Red Hat Product Security

7.8

CVSS 3.1

Review impact separately from score.

Published · November 27, 2022

Updated · November 21, 2025

Description

A flaw was found in Etags, the Ctags implementation of Emacs. A file with a crafted filename may result in arbitrary command execution when processed by Etags.

Statement

This vulnerability is only triggered when a local user runs etags with untrusted input, via a file with a crafted filename in the directory or set of files being processed by etags, for example. For this reason, this flaw has been rated with a moderate security impact.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Do not run Etags with untrusted input, in an untrusted directory or set of files, for example.

CVSS / CWE

CVSS 3.1 · 7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')