עברית

Vulnerability Intelligence

CVE-2026-21806

Critical 9.8

Published
Last modified
NVD status
Analyzed

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.

Affected products

hcltech: bigfix service management

References1

Metrics

CVSS 3.1
9.8 CRITICAL Score source: NVD CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — exploit probability
0% percentile: 10 · as of 8 November 2026
CWE
CWE-557

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