Microsoft Exchange Server 5.5 and 5.0 does not properly handle (1) malformed NNTP data, or (2) malformed SMTP data, which allows remote attackers to cause a denial of service (application error).
| Software | From | Fixed in |
|---|---|---|
| microsoft / exchange_server | 5.5 | 5.5.x |
| microsoft / exchange_server | 5.0 | 5.0.x |