CVE-2026-21806

Summary

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.

Affected Software

VendorProductVersion RangeStatus
HCL SoftwareHCL BigFix Service ManagementVersion 27affected

Weaknesses

  • CWE-557: CWE-557 Concurrency Issues

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References