Advisory Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of WinZip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of 7Z files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Fixed in WinZip 29.0
https://kb.winzip.com/help/help_whatsnew.htm

• 2024-09-04 - Vulnerability reported to vendor
• 2025-01-20 - Coordinated public release of advisory
• 2025-01-20 - Advisory Updated