CVE-2017-5940: Firejail Project Firejail

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Firejail before 0.9.44.6 and 0.9.38.x LTS before 0.9.38.10 LTS does not comprehensively address dotfile cases during its attempt to prevent accessing user files with an euid of zero, which allows local users to conduct sandbox-escape attacks via vectors involving a symlink and the --private option. NOTE: this vulnerability exists because of an incomplete fix for CVE-2017-5180.

Affected products

• Firejail Project Firejail: from 0.9.38, up to and including 0.9.38.10; from 0.9.40, up to and including 0.9.44.6

Published 2017-02-09. Last modified 2026-06-17.