CVE-2026-104332: CWE-121 Stack-based buffer overflow in IBM Db2
Description
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 is vulnerable to a denial of service when executing a specially crafted query with a Materialized Query Table
CVSS v3.1
Score 5.5medium
Affected software
IBM
Db2
cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:aix:*:*cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:aix:*:*cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:aix:*:*cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:aix:*:*cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:linux:*:*cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:linux:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-104332 is a stack-based buffer overflow vulnerability in IBM Db2 affecting versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5. The flaw can be exploited by executing a specially crafted query that uses a Materialized Query Table, causing a denial of service. The vulnerability does not impact confidentiality or integrity but affects availability. The CVSS 3.1 vector indicates local attack vector with low complexity, requiring low privileges and no user interaction.
Potential Impact
Successful exploitation results in denial of service by crashing or destabilizing the IBM Db2 server process. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid executing untrusted or specially crafted queries involving Materialized Query Tables. Monitor IBM's security advisories for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-10-01T20:02:48.086Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acd36282cdf04f656c89f2e
Added to database: 10/12/2026, 19:34:00 UTC
Last enriched: 10/12/2026, 19:48:26 UTC
Last updated: 10/12/2026, 23:19:06 UTC
Views: 12
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