CVE-2025-2668: 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 is vulnerable to a denial of service as the server may crash when an authenticated user creates a specially crafted query.

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 when an authenticated user creates a specially crafted query.

— MITRE

Affected Software

5 affected components
IBM DB2
IBM IBM® Db2®<=11.5.0 - 11.5.9
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

Remediation

Information

Customers running any vulnerable affected level of an affected Program, V11.5 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 affected level for each impacted release: V11.5.9. They can be applied to any affected mod pack level of the appropriate release to remediate this vulnerability.   ReleaseFixed in mod packAPARDownload URLV11.5TBD https://www.ibm.com/support/pages/node/7087189 V12.1V12.1.2 & 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/7257518

Event History

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
Feb 9, 2026
Data Sourced
via IBM·09:50 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2025-2668?

CVE-2025-2668 is rated as a high severity vulnerability due to its potential to cause a denial of service.

2

How does CVE-2025-2668 exploit IBM Db2?

CVE-2025-2668 exploits IBM Db2 by crashing the server through a specially crafted query from an authenticated user.

3

Which versions of IBM Db2 are affected by CVE-2025-2668?

CVE-2025-2668 affects IBM Db2 versions 11.5.0 to 11.5.9.

4

What are the consequences of not fixing CVE-2025-2668?

Not fixing CVE-2025-2668 can lead to service interruptions and potential downtime for applications reliant on IBM Db2.

5

How can I mitigate CVE-2025-2668?

To mitigate CVE-2025-2668, it is recommended to update IBM Db2 to a version that addresses this denial of service vulnerability.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203