CVE-2011-4089: Bzip BZIP2

Medium severity, CVSS 4.6. EPSS: 1% chance of exploitation in the next 30 days.

The bzexe command in bzip2 1.0.5 and earlier generates compressed executables that do not properly handle temporary files during extraction, which allows local users to execute arbitrary code by precreating a temporary directory.

Affected products

• Bzip BZIP2: up to and including 1.0.4; version 1.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only

Published 2014-04-16. Last modified 2026-06-16.