IBM Db2 RCE via DRDA handshake before 11.5.9/12.1.4
CVE-2026-10109 Published on June 30, 2026
IBM® Db2® is vulnerable to remote code execution due to improper pre-auth DRDA handshake handling
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.
Vulnerability Analysis
CVE-2026-10109 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Code Injection Vulnerability?
The software 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.
CVE-2026-10109 has been classified to as a Code Injection vulnerability or weakness.
Products Associated with CVE-2026-10109
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Affected Versions
IBM Db2:- Version 11.5.0, <= 11.5.9 is affected.
- Version 12.1.0, <= 12.1.4 is affected.