CVE-2025-36428: 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 due to improper neutralization of special elements in data query logic when the RPSCAN feature is enabled.

Other sources

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial of service due to improper neutralization of special elements in data query logic when the RPSCAN feature is enabled.

— IBM

Affected Software

9 affected components
IBM Db2 for Linux, UNIX and Windows>=11.5.0<=11.5.9, >=12.1.0<=12.1.3
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/7257697

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·09:27 PM
Data Sourced
via MITRE·09:27 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-2025-36428?

CVE-2025-36428 is classified as a denial of service vulnerability that affects specific versions of IBM Db2.

2

How do I fix CVE-2025-36428?

To mitigate CVE-2025-36428, disable the RPSCAN feature in IBM Db2 if it is currently enabled.

3

Who is affected by CVE-2025-36428?

CVE-2025-36428 affects authenticated users of 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 causes CVE-2025-36428?

CVE-2025-36428 is caused by improper neutralization of special elements in data query logic when the RPSCAN feature is enabled.

5

Can CVE-2025-36428 be exploited remotely?

CVE-2025-36428 requires authentication, meaning it cannot be exploited remotely by unauthenticated users.

Company

Resources

Contact

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