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CVE-2026-21806

9.8 critical SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 9.8 · hcltechNVD modified 2026-10-14 17:36

Affected (CPE criteria) 1

  • cpe:2.3:a:hcltech:bigfix_service_management:27:-:*:*:*:*:*:*

References 1