CVE-2025-36427: IBM Db2 Denial of Service

Published Jan 29, 2026
·
Updated

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow a local user to cause a denial of service due to improper neutralization of special elements in data query logic.

Other sources

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow a user to cause a denial of service due to insufficient validation of special elements in data query logic.

— MITRE

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/7257696

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-2025-36427?

The severity of CVE-2025-36427 is classified as moderate, indicating a potential impact on service availability.

2

How do I fix CVE-2025-36427?

To mitigate CVE-2025-36427, users should upgrade IBM Db2 to a version beyond the affected ranges of 11.5.9 or 12.1.3.

3

What versions of IBM Db2 are affected by CVE-2025-36427?

CVE-2025-36427 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 type of vulnerability is CVE-2025-36427?

CVE-2025-36427 is a denial of service vulnerability caused by improper neutralization of special elements in data query logic.

5

Can CVE-2025-36427 be exploited by remote users?

No, CVE-2025-36427 requires local access for exploitation, making it less likely to be targeted by remote attackers.

Company

Resources

Contact

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