CVE-2020-4280: IBM Qradar Security Information And Event Manager

High severity, CVSS 8.8. EPSS: 73% chance of exploitation in the next 30 days.

IBM QRadar SIEM 7.3 and 7.4 could allow a remote attacker to execute arbitrary commands on the system, caused by insecure deserialization of user-supplied content by the Java deserialization function. By sending a malicious serialized Java object, an attacker could exploit this vulnerability to execute arbitrary commands on the system. IBM X-Force ID: 176140.

Affected products

• IBM Qradar Security Information And Event Manager: from 7.3.0, up to and including 7.3.3; from 7.4.0, up to and including 7.4.1; version 7.3.3 only

Published 2020-10-08. Last modified 2026-06-17.