Vulnerability Details CVE-2026-21806
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 4.0%
CVSS Severity
CVSS v3 Score 3.1
Products affected by CVE-2026-21806
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cpe:2.3:a:hcltech:bigfix_service_management:27