CVE-2002-1790: Microsoft Exchange Server

Medium severity, CVSS 5.0. EPSS: 34% chance of exploitation in the next 30 days.

The SMTP service in Microsoft Internet Information Services (IIS) 4.0 and 5.0 allows remote attackers to bypass anti-relaying rules and send spam or spoofed messages via encapsulated SMTP addresses, a similar vulnerability to CVE-1999-0682.

Affected products

• Microsoft Exchange Server: version 5.5 only
• Microsoft Internet Information Server: version 4.0 only
• Microsoft Internet Information Services: version 5.0 only

Published 2002-12-31. Last modified 2026-06-16.