CVE-2025-36424: IBM Db2 Denial of Service
Published Jan 29, 2026
·Updated
IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow a user to cause a denial of service due to improper neutralization of special elements in data query logic.
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
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
Frequently Asked Questions
1
What is the severity of CVE-2025-36424?
CVE-2025-36424 is classified as a denial of service vulnerability that can impact the availability of IBM Db2 for affected versions.
2
How do I fix CVE-2025-36424?
To address CVE-2025-36424, update IBM Db2 to a later version that resolves this issue.
3
Which versions of IBM Db2 are affected by CVE-2025-36424?
CVE-2025-36424 affects IBM Db2 versions 11.5.0 to 11.5.9 and 12.1.0 to 12.1.3.
4
What kind of attack does CVE-2025-36424 facilitate?
CVE-2025-36424 allows a local user to perform a denial of service attack by exploiting improper data query handling.
5
Can CVE-2025-36424 be exploited remotely?
No, CVE-2025-36424 requires local access to the system to exploit the vulnerability.