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CVE-2026-79992 is an improper neutralization vulnerability in GNU Emacs TRAMP. TRAMP concatenates login arguments, including an attacker-controlled user field derived from a crafted TRAMP filename or connection specification, and passes the resulting data to a local shell without adequate sanitization. This permits shell command injection when Emacs processes the malicious input. GNU Emacs 30.2 and later are affected; earlier versions may also be affected.
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No public exploit code observed for this vulnerability.
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A high-impact local vulnerability affecting the Emacs package on Fedora 43. Successful exploitation requires local access and low privileges and can compromise confidentiality, integrity, and availability.
An arbitrary-code-execution vulnerability caused by improper sanitization of arguments in the TRAMP component when handling crafted filenames.
A locally exploitable vulnerability affecting the Emacs package on Fedora 44. The supplied CVSS v3.0 vector is AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating that a local attacker with low privileges could potentially achieve high impact to confidentiality, integrity, and availability.
A high-severity local shell command injection vulnerability in Emacs TRAMP caused by the user field. The referenced Fedora 43 security update, emacs-30.2-11.fc43, is intended to fix it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.