CVE-2025-36001: IBM Db2 Denial of Service

Published Jan 29, 2026
·
Updated

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5.0 - 11.5.9 and 12.1.0 - 12.1.3 could allow an authenticated user to cause a denial of service using a specially crafted SQL statement including XML that performs uncontrolled recursion.

Other sources

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial of service using a specially crafted SQL statement including XML that performs uncontrolled recursion.

— MITRE

Affected Software

9 affected components
IBM Db2 for Linux, UNIX and Windows
IBM IBM® Db2®<=11.5.0 - 11.5.9
IBM IBM® Db2®<=12.1.0 - 12.1.2
IBM Db2 Linux>=11.5.0<=11.5.9
IBM Db2 Unix>=11.5.0<=11.5.9
IBM Db2 Windows>=11.5.0<=11.5.9
IBM Db2 Linux>=12.1.0<=12.1.3
IBM Db2 Unix>=12.1.0<=12.1.3
IBM Db2 Windows>=12.1.0<=12.1.3

Remediation

Information

Customers running any vulnerable modpack level of an affected Program, V11.5, and V12.1, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent level for each impacted release: V11.5.9, and V12.1.2. They can be applied to any affected level of the appropriate release to remediate this vulnerability.   ReleaseFixed in mod packAPARDownload URLV11.5TBD https://www.ibm.com/support/pages/node/7087189 V12.1   v12.1.3   https://www.ibm.com/support/pages/db2-v1212-published-cumulative-special-build-downloads 12.1.3 Latest https://www.ibm.com/support/pages/db2-v1213-published-cumulative-special-build-downloads

Patch Available

https://www.ibm.com/support/pages/node/7257616

Event History

Jan 29, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Jan 30, 2026
CVE Published
via MITRE·09:28 PM
Data Sourced
via MITRE·09:28 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·10:15 PM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2025-36001?

CVE-2025-36001 is classified as a denial of service vulnerability that can affect IBM Db2 versions 11.5.0 to 11.5.9 and 12.1.0 to 12.1.3.

2

How can CVE-2025-36001 be exploited?

CVE-2025-36001 can be exploited by an authenticated user who sends a specially crafted SQL statement that triggers uncontrolled recursion, leading to potential service disruption.

3

What versions of IBM Db2 are affected by CVE-2025-36001?

CVE-2025-36001 affects IBM Db2 for Linux, UNIX, and Windows versions 11.5.0 - 11.5.9 and 12.1.0 - 12.1.3.

4

How do I mitigate CVE-2025-36001?

To mitigate CVE-2025-36001, it is recommended to upgrade to a version of IBM Db2 that is not affected by this vulnerability.

5

Who should be concerned about CVE-2025-36001?

Organizations using IBM Db2 for Linux, UNIX, and Windows versions within the specified ranges should be concerned about CVE-2025-36001 and take appropriate action.

Company

Resources

Contact

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