IBM Db2 Auth Bypass in CREATE WRAPPER (11.5.0-11.5.9, 12.1.0-12.1.5)
CVE-2026-18166 Published on October 12, 2026
IBM® Db2® is vulnerable to arbitrary library loading via the CREATE WRAPPER command, allowing a privileged database user to read sensitive files from the host filesystem
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow a remote authenticated attacker to obtain sensitive information due to improper authorization when using the CREATE WRAPPER command.
Vulnerability Analysis
CVE-2026-18166 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is an Authorization Vulnerability?
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CVE-2026-18166 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2026-18166
Want to know whenever a new CVE is published for IBM Db2? stack.watch will email you.
Affected Versions
IBM Db2:- Version 11.5.0, <= 11.5.9 is affected.
- Version 12.1.0, <= 12.1.5 is affected.