Emacs: emacs: command injection via crafted filenames in tramp (CVE-2026-79992) | HOL Guard CVE

High · CVSS 7.8CVE-2026-79992

Emacs: emacs: command injection via crafted filenames in tramp

Answer in brief

CVE-2026-79992 records a High severity (CVSS 7.8) vulnerability in Emacs: emacs: command injection via crafted filenames in tramp. The current sources do not mark it as known exploited. The current feed maps Red Hat/emacs (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 25, 2026Updated Sep 24, 2026Source checked Sep 25, 2026First seen by HOL Aug 25, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/emacs (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Red Hat/emacsgeneric	*	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/emacs.
Review the reported fix. Source-reported workaround: Users of Emacs TRAMP should avoid processing untrusted filenames or interacting with remote systems that may contain maliciously crafted file names. This operational control reduces the risk of local shell command injection.

Evidence timeline and material changes

Published upstream
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 25, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.