CVE-2021-20515: IBM Informix Dynamic Server

Medium severity, CVSS 6.7. EPSS: 0.3% chance of exploitation in the next 30 days.

IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.

Affected products

• IBM Informix Dynamic Server: version 14.10 only

Published 2021-04-30. Last modified 2026-06-17.