Adobe eBook Reader 2.1 and 2.2 allows a user to copy eBooks to other systems by using the backup feature, capturing the encryption Challenge, and using the appropriate hash function to generate the activation code.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Digital_editions | Adobe | 2.1 (including) | 2.1 (including) |
| Digital_editions | Adobe | 2.2 (including) | 2.2 (including) |
| Digital_editions | Adobe | 9.2.1 (including) | 9.2.1 (including) |
| Digital_editions | Adobe | 9.2.2 (including) | 9.2.2 (including) |