CVE-2017-1000383: GNU Emacs

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

GNU Emacs version 25.3.1 (and other versions most likely) ignores umask when creating a backup save file ("[ORIGINAL_FILENAME]~") resulting in files that may be world readable or otherwise accessible in ways not intended by the user running the emacs binary.

Affected products

• GNU Emacs: up to and including 25.3.0

Published 2017-10-31. Last modified 2026-06-17.