CVE-2026-10109
Received Received - Intake

Remote Code Execution in IBM Db2

Publication date: 2026-06-30

Last updated on: 2026-06-30

Assigner: IBM Corporation

Description
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to remote code execution due to improper pre-auth DRDA handshake handling.

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Meta Information

Published
2026-06-30
Last Modified
2026-06-30
Generated
2026-07-01
AI Q&A
2026-06-30
EPSS Evaluated
N/A
NVD
CVE-2026-10109
EUVD
EUVD-2026-40406

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 12.1.4 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

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Executive Summary

CVE-2026-10109 is a critical vulnerability in IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.4. It arises from improper handling of the pre-authentication Distributed Relational Database Architecture (DRDA) handshake.

This flaw is classified as CWE-94, which means it involves improper control of code generation, commonly known as code injection. Because of this, an attacker can execute arbitrary code remotely without needing to authenticate.

Impact Analysis

This vulnerability allows remote attackers to execute arbitrary code on affected IBM Db2 servers without any authentication.

The impact is severe, as it can lead to full compromise of the database server, including unauthorized data access, data modification, or disruption of database availability.

Detection Guidance

No replication steps or specific detection commands have been disclosed by IBM to prevent potential exploitation of this vulnerability.

Mitigation Strategies

IBM advises customers to apply the provided interim fixes available via special builds for the latest versions of Db2 11.5.9 and 12.1.4 through Fix Central.

There are currently no workarounds available, so applying the official fixes is the recommended immediate mitigation step.

Compliance Impact

CVE-2026-10109 is a critical remote code execution vulnerability in IBM Db2 that allows attackers to execute arbitrary code without authentication. Such a vulnerability can lead to unauthorized access, data breaches, and potential manipulation or theft of sensitive data.

Because of the high severity and the ability to compromise confidentiality, integrity, and availability, this vulnerability can negatively impact compliance with common standards and regulations such as GDPR and HIPAA, which require protection of personal and sensitive data against unauthorized access and breaches.

Organizations using affected versions of IBM Db2 should apply the provided fixes promptly to mitigate risks and maintain compliance with these regulations.

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