CVE-2026-21806 — LOW (3.1) — White Hats Nepal

Vulnerability Description

HCL BigFix Service Management is affected by an Administrative Session Concurrency vulnerability. The application allows multiple simultaneous authenticated sessions for the same administrative account, which could enable an unauthorized attacker to predict or hijack valid session identifiers. Successful exploitation allows an attacker to compromise affected administrative sessions and execute actions with full privileged user permissions.

CVSS Score

3.1

LOW

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Related Weaknesses (CWE)

CWE-557

References

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133592

FAQ

What is CVE-2026-21806?

CVE-2026-21806 is a vulnerability with a CVSS score of 3.1 (LOW). HCL BigFix Service Management is affected by an Administrative Session Concurrency vulnerability. The application allows multiple simultaneous authenticated sessions for the same administrative accoun...

How severe is CVE-2026-21806?

CVE-2026-21806 has been rated LOW with a CVSS base score of 3.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-21806?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.