Auth bypass in Ibm Db2

CVE-2026-10543

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 is vulnerable to privilege escalation with a specially crafted query.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N.

Affected products

Ibm Db2 — versions 11.5.0, 12.1.0

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-10543?: CVE-2026-10543 is a high-severity vulnerability in Ibm Db2, classified under Improper Authorization. CVSS score: 8.2/10. Published 2026-08-12.
How severe is CVE-2026-10543?: High severity. CVSS v3 base score is 8.2 out of 10.