CVE-2019-4551

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-02-04 · updated 2026-06-17
Weakness: CWE-306

Description

IBM Security Directory Server 6.4.0 does not perform an authentication check for a critical resource or functionality allowing anonymous users access to protected areas. IBM X-Force ID: 165953.

Affected products

IBM Security Directory Server: from 6.4.0.0 before 6.4.0.20 — fixed in 6.4.0.20

How to fix

Upgrade to a fixed version: IBM Security Directory Server 6.4.0.20. Check the vendor advisory for mitigations.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/165953
https://www.ibm.com/support/pages/node/1288660
https://exchange.xforce.ibmcloud.com/vulnerabilities/165953
https://www.ibm.com/support/pages/node/1288660

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