CVE-2026-21806
HCL BigFix Service Management was affected with Admin Session Concurrency vulnerability (CVE-2026-21806)
CVSS Score
3.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-557 |
| Vendor | hcl software |
| Product | hcl bigfix service management |
| Published | Sep 18, 2026 |
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CVSS v3 Breakdown
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
Affected Versions
HCL Software / HCL BigFix Service Management
Version 27