CVE-2019-4538

Name: CVE-2019-4538
Creator: NVD / NIST
Published: 2019-10-02T15:15:10.497+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.2/10EPSS 1.29%

Last modified Jun 17, 2026

CVE-2019-4538 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. IBM Security Directory Server 6.4.0 could allow a remote attacker to conduct phishing attacks, using an open redirect attack. By persuading a victim to visit a specially-crafted Web site, a remote attacker could exploit this vulnerability to spoof the URL displayed to redirect a user to a malicious Web site that would appear to be trusted. EPSS estimates a 1.29% chance of exploitation in the next 30 days.

Description

IBM Security Directory Server 6.4.0 could allow a remote attacker to conduct phishing attacks, using an open redirect attack. By persuading a victim to visit a specially-crafted Web site, a remote attacker could exploit this vulnerability to spoof the URL displayed to redirect a user to a malicious Web site that would appear to be trusted. This could allow the attacker to obtain highly sensitive information or conduct further attacks against the victim. IBM X-Force ID: 165660.

Metrics

CVSS 3.1

8.2/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N

EPSS Probability

1.29%

66.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-601

Affected Software

Vendor	Product	Versions
Ibm	Security Directory Server	6.4.0

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/165660VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/1077045Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/165660VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/1077045Patch, Vendor Advisory

Timeline

Published: Oct 2, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-4538?

How severe is CVE-2019-4538?

CVE-2019-4538 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 1.29% probability of exploitation in the next 30 days.

How do I fix CVE-2019-4538?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-4538?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST