CVE-2021-20397: IBM Qradar Security Information And Event Manager

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

IBM QRadar SIEM 7.3 and 7.4 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: 196017.

Affected products

• IBM Qradar Security Information And Event Manager: from 7.3.0, before 7.3.3 (fixed in 7.3.3); from 7.4.0, before 7.4.2 (fixed in 7.4.2); version 7.3.3 only; version 7.4.2 only

Published 2021-05-05. Last modified 2026-06-17.