CVE-2021-20399 XML external entity in QRadar SIEM
Remote attackers can exploit XML External Entity injection in IBM QRadar SIEM to expose sensitive information or cause memory exhaustion.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-20399?
CVE-2021-20399 is a high-severity vulnerability in Ibm Qradar Security Information and Event Manager, published on 27 Jul 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-611
Which versions are affected by CVE-2021-20399?
It affects 1 product.
Products include Ibm Qradar Security Information and Event Manager.
How do I fix CVE-2021-20399?
No fix has been published for CVE-2021-20399 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-20399 being exploited?
There is no known exploitation of CVE-2021-20399 in the wild and no public exploit code.
Other vulnerabilities in Ibm Qradar Security Information and Event Manager
- CVE-2019-4210 Auth bypass in QRadar SIEM
- CVE-2014-3062 Code injection in n/a
- CVE-2025-33117 IBM QRadar SIEM command execution
- CVE-2020-4512 Command injection in QRadar SIEM
- CVE-2015-2011 Command injection in n/a
All Ibm Qradar Security Information and Event Manager vulnerabilities
Sources
Also known as GHSA-3gg6-gcfv-5r7j.