CVE-2021-20400 json
IBM QRadar SIEM 7.3 and 7.4 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive inf…
published 4y ago modified 4mo ago also EUVD-2021-7818
- cvss
- 5.9
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- ibm qradar_security_information_and_event_manager 7.3.3, 7.4.3
- ibm.com/support/pages/node/6520488 advisory
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Check with FencerExploit prediction
0.69% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 5.9 | CVSS:3.0/PR:N/AC:H/I:N/C:H/A:N/AV:N/UI:N/S:U/RL:O/E:U/RC:C |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| CNA | 3.0 | 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- IBM QRadar SIEM
Classification
- Weakness
-
- CWE-326 Inadequate Encryption Strength
References
-
ibm.com
/support/pages/node/6520488
patch, vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/196074
vdb-entry, vendor-advisory
Sources
- CVE List CVE-2021-20400
- NVD CVE-2021-20400
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.