What is CVE-2019-4542?

CVE-2019-4542 is a medium-severity vulnerability in IBM Security Directory Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-10-02.

How severe is CVE-2019-4542?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in IBM Security Directory Server

CVE-2019-4542

IBM Security Directory Server 6.4.0 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 165815.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-10-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.0th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

IBM Security Directory Server — versions 6.4.0
IBM Security Directory Server — versions 6.4.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.ibm.com/support/pages/node/1077045 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/165815 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2019-4542?: CVE-2019-4542 is a medium-severity vulnerability in IBM Security Directory Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-10-02.
How severe is CVE-2019-4542?: Medium severity. CVSS v3 base score is 6.1 out of 10.