CVE-2021-20393

Name: CVE-2021-20393
Creator: NVD / NIST
Published: 2021-05-14T17:15:07.703+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.44%

Last modified Jun 17, 2026

CVE-2021-20393 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.44% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.44%

69.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-209

Affected Software

Vendor	Product	Versions
Ibm	Qradar User Behavior Analytics	>= 1.0.0, < 4.1.1

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/196001VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6453109Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/196001VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6453109Vendor Advisory

Timeline

Published: May 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20393?

How severe is CVE-2021-20393?

CVE-2021-20393 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.44% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20393?

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-2021-20393?

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

Scan your code now

Source: NVD / NIST