CVE-2026-79992

NameCVE-2026-79992
DescriptionA 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1145049

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
emacs (PTS)bullseye1:27.1+1-3.1+deb11u5vulnerable
bullseye (security)1:27.1+1-3.1+deb11u6vulnerable
bookworm, bookworm (security)1:28.2+1-15+deb12u4vulnerable
trixie1:30.1+1-6vulnerable
forky, sid1:30.2+1-11vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
emacssource(unstable)(unfixed)1145049

Notes

https://www.openwall.com/lists/oss-security/2026/08/21/1
Fixed by: https://cgit.git.savannah.gnu.org/cgit/emacs.git/commit/?id=f3e7104d05bdb8e32ba13bf75604108ad88536dc
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