CVE-1999-0945: Microsoft Exchange Server

Medium severity, CVSS 5.0. EPSS: 19.5% chance of exploitation in the next 30 days.

Buffer overflow in Internet Mail Service (IMS) for Microsoft Exchange 5.5 and 5.0 allows remote attackers to conduct a denial of service via AUTH or AUTHINFO commands.

Affected products

• Microsoft Exchange Server: version 5.0 only; version 5.5 only

Published 2001-03-12. Last modified 2026-06-16.