CVE-2023-29421: BZIP3 Project BZIP3

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.

Affected products

• BZIP3 Project BZIP3: before 1.2.3 (fixed in 1.2.3)

Published 2023-04-06. Last modified 2026-06-17.