CVE-2021-20400
HIGHCVSS 7.5/10EPSS 0.66%
Last modified
CVE-2021-20400 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. IBM QRadar SIEM 7.3 and 7.4 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 196074.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.
Description
IBM QRadar SIEM 7.3 and 7.4 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 196074.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ibm | Qradar Security Information And Event Manager | >= 7.3.0, < 7.3.3 |
| Ibm | Qradar Security Information And Event Manager | >= 7.4.0, < 7.4.3 |
| Ibm | Qradar Security Information And Event Manager | 7.3.3 |
| Ibm | Qradar Security Information And Event Manager | 7.4.3 |
References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/196074VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6520488Patch, Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/196074VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6520488Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20400?
IBM QRadar SIEM 7.3 and 7.4 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 196074.
How severe is CVE-2021-20400?
CVE-2021-20400 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20400?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-20400?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST