CVE-2026-113698
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Denial of Service in IBM Db2 via Materialized Query Table

Publication date: 2026-11-08

Last updated on: 2026-11-08

Assigner: IBM Corporation

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.

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Meta Information

Published
2026-11-08
Last Modified
2026-11-08
Generated
2026-11-08
AI Q&A
2026-11-08
EPSS Evaluated
N/A
NVD
CVE-2026-113698
EUVD
EUVD-2026-119689

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
IBM Db2 From 11.5.0 (inc) to 11.5.9 (inc)
IBM Db2 From 12.1.0 (inc) to 12.1.5 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

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Executive Summary

IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 are vulnerable to a denial of service when executing a specially crafted query with a Materialized Query Table. This can cause the system to crash or become unresponsive due to a stack-based buffer overflow.

Impact Analysis

The vulnerability can lead to system downtime and disruption of services relying on IBM Db2. Attackers could exploit it to crash databases, causing loss of availability for critical applications and data.

Mitigation Strategies

Apply security updates provided by IBM for affected Db2 versions 11.5.0-11.5.9 and 12.1.0-12.1.5. Download fixes from IBM Fix Central and install them on all vulnerable systems.

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