CVE-2003-0301: Microsoft Outlook Express

Medium severity, CVSS 5.0. EPSS: 6% chance of exploitation in the next 30 days.

The IMAP Client for Outlook Express 6.00.2800.1106 allows remote malicious IMAP servers to cause a denial of service (crash) via certain large literal size values that cause either integer signedness errors or integer overflow errors.

Affected products

• Microsoft Outlook Express: version 6.00.2800.1106 only

Published 2003-06-16. Last modified 2026-06-16.