CVE-2002-0759: Bzip BZIP2

Medium severity, CVSS 5.0. EPSS: 1.3% chance of exploitation in the next 30 days.

bzip2 before 1.0.2 in FreeBSD 4.5 and earlier, OpenLinux 3.1 and 3.1.1, and possibly other operating systems, does not use the O_EXCL flag to create files during decompression and does not warn the user if an existing file would be overwritten, which could allow attackers to overwrite files via a bzip2 archive.

Affected products

• Bzip BZIP2: version 0.9.0 only; version 0.9.0a only; version 0.9.0b only; version 0.9.0c only; version 0.9.5a only; version 0.9.5b only; …

Published 2002-08-12. Last modified 2026-06-16.