CVE-2021-20393

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-05-14 · updated 2026-06-17
Weakness: CWE-209

Description

IBM QRadar User Behavior Analytics 1.0.0 through 4.1.0 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in the browser. This information could be used in further attacks against the system. IBM X-Force ID: 196001.

Affected products

IBM QRadar User Behavior Analytics: from 1.0.0 before 4.1.1 — fixed in 4.1.1

How to fix

Upgrade to a fixed version: IBM QRadar User Behavior Analytics 4.1.1. Check the vendor advisory for mitigations.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/196001
https://www.ibm.com/support/pages/node/6453109
https://exchange.xforce.ibmcloud.com/vulnerabilities/196001
https://www.ibm.com/support/pages/node/6453109

Get alerted when CVE-2021-20393 or the next vulnerability affects your stack