CVE-2021-20399

9.1 criticalEPSS 1.8%

Critical (9.1) in ibm qradar security information and event manager. EPSS 1.8% chance of exploitation in the next 30 days.

IBM Qradar SIEM 7.3.0 to 7.3.3 Patch 8 and 7.4.0 to 7.4.3 GA is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 196073.

Severity

CVSS 3.1

9.1 critical

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

EPSS: 1.8% chance of exploitation in the next 30 days; higher than 78% of CVEs (scores of 2026-10-31)
CWE: CWE-611
Published: 2021-07-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

ibm:qradar_security_information_and_event_manager

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/196073
https://www.ibm.com/support/pages/node/6475263
https://exchange.xforce.ibmcloud.com/vulnerabilities/196073
https://www.ibm.com/support/pages/node/6475263

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