CVE-2011-1033: Stack-based buffer overflow in oninit in IBM Informix Dynamic Server (IDS) 11.50 allows remote attackers to...

Security readout for executives and security teams

CVE-2011-1033 is a remote code execution flaw in IBM Informix Dynamic Server 11.50. A malicious database client could send a specially crafted SQL environment setting that overflows memory in oninit. The sources do not show KEV listing, active exploitation, CVSS scoring, or a confirmed vendor fix in the supplied bundle. Exposure is most likely where IBM Informix Dynamic Server 11.50 is still deployed and accepts SQL connections from users, applications, or networks that are not tightly trusted. The bundle does not identify other affected versions. Prioritize this if Informix IDS 11.50 supports business-critical systems or is reachable by broad internal networks. Remote code execution against a database server can affect confidentiality, integrity, and availability, but urgency depends on whether this legacy version is present and exposed. Mitigation focus: Identify any IBM Informix Dynamic Server 11.50 deployments.; Check IBM or X-Force guidance for applicable fixes or upgrade paths.; Restrict database listener access to trusted application hosts only..

Prepared

Jun 28, 2026, 01:17 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.