IBM QRadar User Behavior Analytics 1.0.0 through 4.1.0 allows web pages to be stored locally which can be read by another user on the syste…

published 2021-05-14 5y ago modified 2026-06-17 4mo ago also EUVD-2021-7809

cvss: 4.0; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

IBM QRadar User Behavior Analytics 1.0.0 through 4.1.0 allows web pages to be stored locally which can be read by another user on the system. IBM X-Force ID: 195999.

Patch / fix

fixed in 1

ibm qradar_user_behavior_analytics 4.1.1

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Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	4.0	CVSS:3.0/S:U/C:L/A:N/AV:L/UI:N/AC:L/I:N/PR:N/RL:O/E:U/RC:C
NVD	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA	3.0	4.0	CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

IBM QRadar SIEM

Classification

Weakness

CWE-922 Insecure Storage of Sensitive Information

References

ibm.com /support/pages/node/6453103
vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/195999
vdb-entry, vendor-advisory

Sources

CVE List CVE-2021-20391
NVD CVE-2021-20391

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