What is CVE-2019-4340?

CVE-2019-4340 is a high-severity vulnerability in IBM Security Guardium Big Data Intelligence, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.2/10. Published 2019-08-20.

How severe is CVE-2019-4340?

High severity. CVSS v3 base score is 8.2 out of 10.

XXE in IBM Security Guardium Big Data Intelligence

CVE-2019-4340

IBM Security Guardium Big Data Intelligence 4.0 (SonarG) is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 161419.

Vulnerability class: XXE (XML External Entity)

Published 2019-08-20 · last modified 2026-06-17.

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:H/I:N/A:L.

EPSS exploit prediction

EPSS: 0.024 (83.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000

Affected products

IBM Security Guardium Big Data Intelligence — versions 4.0
IBM Security Guardium Big Data Intelligence — versions 4.0

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

www.ibm.com/support/docview.wss (Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/161419 (VDB Entry, vdb-entry, Broken Link)

Frequently asked questions

What is CVE-2019-4340?: CVE-2019-4340 is a high-severity vulnerability in IBM Security Guardium Big Data Intelligence, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.2/10. Published 2019-08-20.
How severe is CVE-2019-4340?: High severity. CVSS v3 base score is 8.2 out of 10.