Improper Authorization in IBM Db2 for Linux, UNIX, and Windows
CVE-2026-18166

7.7HIGH

Key Information:

Vendor

IBM
Status
Db2
Vendor
CVE Published:
12 October 2026

What is CVE-2026-18166?

IBM Db2 versions 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 for Linux, UNIX, and Windows, including DB2 Connect Server, have a vulnerability that could allow a remote authenticated attacker to gain access to sensitive information. This can occur due to improper authorization related to the CREATE WRAPPER command, which may expose data if exploited. It is critical for users to apply the necessary patches and follow security best practices to safeguard their systems.

Affected Version(s)

Db2 11.5.0 <= 11.5.9

Db2 12.1.0 <= 12.1.5

References

https://www.ibm.com/support/pages/node/7291606
vendor-advisorypatch

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.