Denial of Service Vulnerability in IBM Db2 by IBM
CVE-2026-6053

5.5MEDIUM

Key Information:

Vendor

IBM
Status
Db2
Vendor
CVE Published:
27 May 2026

What is CVE-2026-6053?

IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.4 contain a security vulnerability that allows attackers to execute specially crafted queries on range partitioned tables. This can lead to a denial of service, causing the database to become unresponsive and impacting availability. Administrators are advised to review mitigation strategies and apply updates as necessary to safeguard their systems against this threat.

Affected Version(s)

Db2 11.5.0 <= 11.5.9

Db2 12.1.0 <= 12.1.4

References

https://www.ibm.com/support/pages/node/7273556
vendor-advisorypatch

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.