CVE-2023-30447: IBM DB2

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 10.5, 11.1, and 11.5 is vulnerable to denial of service with a specially crafted query on certain tables. IBM X-Force ID: 253436.

Affected products

• IBM DB2: version 10.5.0.11 only; version 11.1.4.7 only; version 11.5 only

Published 2023-07-10. Last modified 2026-06-17.