Denial of Service Vulnerability in IBM Db2 Database Software
CVE-2026-113698

6.5MEDIUM

Key Information:

Vendor

IBM
Status
Db2
Vendor
CVE Published:
8 November 2026

What is CVE-2026-113698?

IBM Db2 versions 11.5.0 to 11.5.9 and 12.1.0 to 12.1.5 are susceptible to a denial of service condition. This vulnerability arises when an attacker executes a specially crafted query that targets a Materialized Query Table, which can disrupt service availability and impact performance. Proper mitigation measures, including applying the latest patches and updates, are crucial to safeguarding systems against this potential threat.

Affected Version(s)

Db2 11.5.0 <= 11.5.9

Db2 12.1.0 <= 12.1.5

References

https://www.ibm.com/support/pages/node/7291614
vendor-advisorypatch

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.