CVE-2002-1698: Microsoft Msn Messenger

Medium severity, CVSS 5.0. EPSS: 15.5% chance of exploitation in the next 30 days.

Buffer overflow in Microsoft MSN Messenger Service 1.0 through 4.6 allows remote attackers to cause a denial of service (crash) via a long FN (font) argument in the message header.

Affected products

• Microsoft Msn Messenger: version 1.0 only; version 2.0 only; version 2.2 only; version 3.0 only; version 3.6 only; version 4.0 only; …

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