CVE-2004-2657: Mozilla Firefox

Low severity, CVSS 1.7. EPSS: 0.3% chance of exploitation in the next 30 days.

Mozilla Firefox 1.5.0.1, and possibly other versions, preserves some records of user activity even after uninstalling, which allows local users who share a Windows profile to view the records after a new installation of Firefox, as reported for the list of Passwords Never Saved web sites. NOTE: The vendor has disputed this issue, stating that "The uninstaller is primarily there to uninstall the application. It is not there to uninstall user data. For the moment I will stick by my module-owner decision.

Affected products

  • Mozilla Firefox: version 1.5.0.1 only

Published 2004-12-31. Last modified 2026-06-16.