CVE-2006-3597: Ubuntu Linux

High severity, CVSS 7.2. EPSS: 0.5% chance of exploitation in the next 30 days.

passwd before 1:4.0.13 on Ubuntu 6.06 LTS leaves the root password blank instead of locking it when the administrator selects the "Go Back" option after the final "Installation complete" message and uses the main menu, which causes the password to be zeroed out in the installer's memory.

Affected products

• Ubuntu Ubuntu Linux: version 6.06_lts only

Published 2006-07-18. Last modified 2026-06-16.