Outlook Express 6.0, when sending multipart e-mail messages using the Break apart messages larger than setting, leaks the BCC recipients of the message to the addresses listed in the To and CC fields, which may allow remote attackers to obtain sensitive information.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Outlook_express | Microsoft | 6.0 (including) | 6.0 (including) |
| Outlook_express | Microsoft | 6.0-sp1 (including) | 6.0-sp1 (including) |