CVE-2018-1635: IBM Informix Dynamic Server

Medium severity, CVSS 6.7. EPSS: 0.4% chance of exploitation in the next 30 days.

Stack-based buffer overflow in oninit in IBM Informix Dynamic Server Enterprise Edition 12.1 allows an authenticated user to execute predefined code with root privileges, such as escalating to a root shell. IBM X-Force ID: 144439.

Affected products

• IBM Informix Dynamic Server: version 12.10 only

Published 2019-08-20. Last modified 2026-06-17.