Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.
| Software | From | Fixed in |
|---|---|---|
| microsoft / outlook | 2000 | 2000.x |
| microsoft / outlook | 97 | 97.x |
| microsoft / outlook | 98 | 98.x |
| microsoft / outlook_express | - | - |