CVE-2026-6053: IBM DB2

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service when a specially crafted query is run with range partitioned tables.

Affected products

• IBM DB2: from 11.5.0, up to and including 11.5.9; from 12.1.0, up to and including 12.1.4

Published 2026-05-27. Last modified 2026-06-17.