What is CVE-2026-84078?

CVE-2026-84078 is a critical-severity vulnerability in IBM Guardium Data Protection, classified under Missing Authentication for Critical Function. CVSS score: 9.9/10. Published 2026-09-18.

How severe is CVE-2026-84078?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Auth bypass in IBM Guardium Data Protection

CVE-2026-84078

IBM Guardium Data Protection 12.2 is vulnerable to a missing authentication vulnerability in the LoadBalancerServlet. An unauthenticated user can access privileged load-balancer operations, potentially resulting in unauthorized actions and impact to the integrity and availability of the affected system.

Vulnerability class: Broken Authentication

Published 2026-09-18 · last modified 2026-10-06.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L.

EPSS exploit prediction

EPSS: 0.005 (40.7th percentile), scored 2026-11-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

IBM Guardium Data Protection — versions 12.2
IBM Guardium Data Protection — versions 12.2

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

www.ibm.com/support/pages/node/7288040 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-84078?: CVE-2026-84078 is a critical-severity vulnerability in IBM Guardium Data Protection, classified under Missing Authentication for Critical Function. CVSS score: 9.9/10. Published 2026-09-18.
How severe is CVE-2026-84078?: Critical severity. CVSS v3 base score is 9.9 out of 10.