CVE-2026-21840: HCL BigFix Platform is affected by a user enumeration vulnerability
Published Jul 14, 2026
·Updated
HCL BigFix Platform is affected by a user enumeration vulnerability which might allow an attacker, through careful system control and response time monitoring, to perform some level of user enumeration for the BigFix service.
Affected Software
1 affected component
HCL BigFix Platform
Event History
Jul 14, 2026
CVE Published
via MITRE·09:36 PM
Data Sourced
via MITRE·09:36 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:16 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2026-21840?
The severity of CVE-2026-21840 is rated as low with a score of 3.1.
2
What does CVE-2026-21840 affect?
CVE-2026-21840 affects the HCL BigFix Platform due to a user enumeration vulnerability.
3
What could an attacker achieve by exploiting CVE-2026-21840?
An attacker could perform user enumeration on the BigFix service by monitoring system control and response times.
4
How can I mitigate the risks associated with CVE-2026-21840?
To mitigate CVE-2026-21840, you may implement stronger access controls and monitor system logs for unusual activity.
5
Is there a known fix for CVE-2026-21840?
As of now, specific fixes for CVE-2026-21840 have not been detailed, so stay updated with the HCL BigFix Platform for any patches or updates.