CVE-2005-2225: Microsoft Msn Messenger Service

Medium severity, CVSS 5.0. EPSS: 16.4% chance of exploitation in the next 30 days.

Microsoft MSN Messenger allows remote attackers to cause a denial of service via a plaintext message containing the ".pif" string, which is interpreted as a malicious file extension and causes users to be kicked from a group conversation. NOTE: it has been reported that Gaim is also affected, so this may be an issue in the protocol or MSN servers.

Affected products

Published 2005-07-12. Last modified 2026-06-16.