CVE-2026-6053: IBM® Db2® is vulnerable to a denial of service when a specially crafted query is run with range partitioned tables

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-27 · updated 2026-10-14
Weakness: CWE-770

Description

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 for Linux, UNIX and Windows: from 11.5.0 through 11.5.9; from 12.1.0 through 12.1.4

References

https://www.ibm.com/support/pages/node/7273556

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