What is CVE-2026-78404?

CVE-2026-78404 is a medium-severity vulnerability in IBM Db2, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2026-10-12.

How severe is CVE-2026-78404?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Privilege escalation in IBM Db2

CVE-2026-78404

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 is vulnerable to a local privilege escalation via the db2pd utility.

Vulnerability class: Privilege Escalation

Published 2026-10-12.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM Db2

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

www.ibm.com/support/pages/node/7291612 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-78404?: CVE-2026-78404 is a medium-severity vulnerability in IBM Db2, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2026-10-12.
How severe is CVE-2026-78404?: Medium severity. CVSS v3 base score is 6.5 out of 10.