CVE-2025-36442: 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 is vulnerable to a denial of service as the server may crash under certain conditions with a specially crafted query with XML columns.

Other sources

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) is vulnerable to a denial of service as the server may crash under certain conditions with a specially crafted query with XML columns.

— 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 - 12.1.3
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, V12.1.2, and V12.1.3. 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   TBD   https://www.ibm.com/support/pages/db2-v1212-published-cumulative-special-build-downloads Special Build #71609 or later for V12.1.3 available at this link: https://www.ibm.com/support/pages/db2-v1213-published-cumulative-special-build-downloads

Patch Available

https://www.ibm.com/support/pages/node/7257698

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·09:18 PM
Data Sourced
via MITRE·09:18 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-2025-36442?

CVE-2025-36442 is categorized as a denial of service vulnerability with potential impacts on system availability.

2

How do I fix CVE-2025-36442?

To mitigate CVE-2025-36442, upgrading to a patched version of IBM Db2 that resolves the issue is recommended.

3

What versions of IBM Db2 are affected by CVE-2025-36442?

CVE-2025-36442 affects IBM Db2 for Linux, UNIX, and Windows versions 11.5.0 to 11.5.9 and 12.1.0 to 12.1.3.

4

What kind of attack does CVE-2025-36442 relate to?

CVE-2025-36442 relates to a denial of service attack where the server may crash due to a specially crafted query with XML columns.

5

Is there any workaround for CVE-2025-36442?

Currently, the only reliable solution for CVE-2025-36442 is to apply the recommended updates or patches provided by IBM.

Company

Resources

Contact

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