CVE-2026-79992 is a vulnerability in Red Hat Enterprise Linux (RHEL)
Published on August 25, 2026
Emacs: local shell command injection through the user field in emacs tramp
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.
Vulnerability Analysis
CVE-2026-79992 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
What is a Shell injection Vulnerability?
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CVE-2026-79992 has been classified to as a Shell injection vulnerability or weakness.
Products Associated with CVE-2026-79992
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