CVE-2020-4135: IBM DB2

High severity, CVSS 7.5. EPSS: 2.9% chance of exploitation in the next 30 days.

IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 could allow an unauthenticated user to send specially crafted packets to cause a denial of service from excessive memory usage.

Affected products

• IBM DB2: version 9.7 only; version 10.1 only; version 10.5 only; version 11.1 only; version 11.5 only
• Netapp Oncommand Insight: affected versions not specified

Published 2020-02-19. Last modified 2026-06-17.