CVE-2026-21806

HCL BigFix Service Management was affected with Admin Session Concurrency vulnerability (CVE-2026-21806)

Published Sep 18, 2026 CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:hcltech:bigfix_service_management:27:-:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Hcltech
Hcltech bigfix Service Management
Vendors & Products Hcltech
Hcltech bigfix Service Management
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title HCL BigFix Service Management was affected with Admin Session Concurrency vulnerability (CVE-2026-21806)
Weaknesses CWE-557
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
HCL
Published
Updated
Sep 18, 2026, 7:07 PM
Reserved
Jan 5, 2026, 4:08 PM
Status
Analyzed
Published
Sep 18, 2026, 12:17 PM
Modified
Oct 14, 2026, 5:36 PM