Can a collision occur during a ZIP password recovery?

Yes, collisions are possible, though rare.

Accent ZIP Password Recovery reliably detects a collision, informs the user about it, and continues searching for a valid password. The application doesn’t show collision passwords.

When a password is displayed, it means that it is valid for the archive.

A collision occurs when the checksum (CRC32) of the unpacked file exactly matches the reference checksum, but the size of the file is different from the one specified in the archive header. That is, unpacking the file using the seemingly suitable collision password was unsuccessful.

Here is a video showing how to use AccentZPR for dictionary attack

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