CVE-2009-4660: Bigantsoft Bigant Messenger

High severity, CVSS 10.0. EPSS: 62.7% chance of exploitation in the next 30 days.

Stack-based buffer overflow in the AntServer Module (AntServer.exe) in BigAnt IM Server 2.50 allows remote attackers to execute arbitrary code via a long GET request to TCP port 6660.

Affected products

• Bigantsoft Bigant Messenger: version 2.50 only

Published 2010-03-03. Last modified 2026-06-16.