CVE-2006-3854: IBM Informix Dynamic Database Server

High severity, CVSS 7.5. EPSS: 3.7% chance of exploitation in the next 30 days.

Buffer overflow in IBM Informix Dynamic Server (IDS) 9.40.TC7, 9.40.TC8, 10.00.TC4, and 10.00.TC5, when running on Windows, allows remote attackers to execute arbitrary code via a long username, which causes an overflow in vsprintf when displaying in the resulting error message. NOTE: this issue is due to an incomplete fix for CVE-2006-3853.

Affected products

• IBM Informix Dynamic Database Server: version 9.40.tc7 only; version 9.40.tc8 only; version 10.00.tc4 only; version 10.00.tc5 only

Published 2006-08-17. Last modified 2026-06-16.