CVE-2004-0203: Microsoft Exchange Server

Medium severity, CVSS 4.3. EPSS: 21% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in Outlook Web Access for Exchange Server 5.5 Service Pack 4 allows remote attackers to insert arbitrary script and spoof content in HTML email or web caches via an HTML redirect query.

Affected products

• Microsoft Exchange Server: version 5.5 only

Published 2004-11-23. Last modified 2026-06-16.