CVE-2021-20397 json
IBM QRadar SIEM 7.3 and 7.4 is vulnerable to cross-site scripting.
published 2021-05-05 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7815
- cvss
- 6.1
- 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 51%
- public exploits
- 0
- none known
Summary
IBM QRadar SIEM 7.3 and 7.4 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 196017.
Patch / fix
- ibm qradar_security_information_and_event_manager 7.3.3, 7.4.2
Exploit prediction
0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.1 | CVSS:3.0/A:N/S:C/I:L/PR:N/C:L/AV:N/UI:R/AC:L/RL:O/E:H/RC:C |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- IBM QRadar SIEM
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
ibm.com
/support/pages/node/6449688
vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/196017
vdb-entry, vendor-advisory
Sources
- CVE List CVE-2021-20397
- NVD CVE-2021-20397
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