CVSS 3.1
7.8 highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVE-2024-53920
High (7.8) in gnu emacs. EPSS 0.6% chance of exploitation in the next 30 days.
In elisp-mode.el in GNU Emacs before 30.1, a user who chooses to invoke elisp-completion-at-point (for code completion) on untrusted Emacs Lisp source code can trigger unsafe Lisp macro expansion that allows attackers to execute arbitrary code. (This unsafe expansion also occurs if a user chooses to enable on-the-fly diagnosis that byte compiles untrusted Emacs Lisp source code.)
Severity
- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-11-01)
- CWE
- CWE-94
- Published
- Modified
- Record from
- the NVD, synced
Affected
- gnu:emacs
References
- https://eshelyaron.com/posts/2024-11-27-emacs-aritrary-code-execution-and-how-to-avoid-it.html
- https://git.savannah.gnu.org/cgit/emacs.git/tag/?h=emacs-30.0.92
- https://git.savannah.gnu.org/cgit/emacs.git/tree/ChangeLog.4
- https://git.savannah.gnu.org/cgit/emacs.git/tree/etc/NEWS?h=emacs-30.1
- https://news.ycombinator.com/item?id=42256409