CVE-2003-1376: Winzip

Medium severity, CVSS 4.6. EPSS: 0.2% chance of exploitation in the next 30 days.

WinZip 8.0 uses weak random number generation for password protected ZIP files, which allows local users to brute force the encryption keys and extract the data from the zip file by guessing the state of the stream coder.

Affected products

• Winzip Winzip: version 8.0 only

Published 2003-12-31. Last modified 2026-06-16.