CVE-2026-45384: Rikyoz BIT7Z

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

bit7z is a cross-platform C++ static library that allows the compression/extraction of archive files. Prior to version 4.0.12, there is an arbitrary file overwrite vulnerability via symlink attack on predictable temp files during archive update. This issue has been patched in version 4.0.12.

Affected products

• Rikyoz BIT7Z: before 4.0.12 (fixed in 4.0.12)

Published 2026-06-10. Last modified 2026-07-23.