CVE-2026-79992

Emacs: emacs: command injection via crafted filenames in tramp

State: Published
Severity: 7.8 High
Published: Aug 25, 2026
Updated: Oct 19, 2026
Reserved: Aug 25, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	redhat

Weaknesses

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

Affected Products

Product	Versions
Red Hat Enterprise Linux 10Red Hat	1:29.4-14.el10_2.3 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	1:26.1-15.el8_10.2 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	1:26.1-15.el8_10.2 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	1:27.2-18.el9_8.2 and laterNot affected
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 7Red Hat

References

RHSA-2026:80506vendor-advisory
RHSA-2026:80507vendor-advisory
RHSA-2026:84591vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-79992vdb-entry
RHBZ#2523665issue-tracking
http://www.openwall.com/lists/oss-security/2026/08/26/15
http://www.openwall.com/lists/oss-security/2026/10/11/1
http://www.openwall.com/lists/oss-security/2026/10/14/4

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