Improper Authorization Vulnerability in IBM Db2 Database Management Software
CVE-2026-16480

4.3MEDIUM

Key Information:

Vendor

IBM
Status
Db2
Vendor
CVE Published:
12 August 2026

What is CVE-2026-16480?

IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 contain an improper authorization vulnerability that can be exploited by non-privileged users. This flaw allows them to bypass necessary authority checks, leading to unauthorized modifications of critical database catalog data. Organizations using these affected versions should apply the relevant patches and secure their database configurations to mitigate risks associated with this vulnerability.

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/7282951
vendor-advisorypatch

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.