What is CVE-2019-4509?

CVE-2019-4509 is a medium-severity vulnerability in IBM Qradar, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2019-11-09.

How severe is CVE-2019-4509?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in IBM Qradar

CVE-2019-4509

IBM QRadar 7.3.0 to 7.3.2 Patch 4 is vulnerable to incorrect authorization in some components which could allow an authenticated user to obtain sensitive information. IBM X-Force ID: 164430.

Vulnerability class: Broken Access Control

Published 2019-11-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (53.3th percentile), scored 2026-10-25.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

IBM Qradar — versions 7.3.0, 7.3.2Patch4
IBM Qradar Security Information And Event Manager — versions 7.3.2

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

www.ibm.com/support/pages/node/1103931 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/164430 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2019-4509?: CVE-2019-4509 is a medium-severity vulnerability in IBM Qradar, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2019-11-09.
How severe is CVE-2019-4509?: Medium severity. CVSS v3 base score is 4.3 out of 10.