CVE-2026-21806
LOWCVSS 3.1Description
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.
Timeline
Published:September 18th, 2026 12:17 PM
Last modified:October 14th, 2026 5:36 PM
CVSS Scoring
CVSS v3: 3.1 (LOW)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected Software
From NVD CPE configuration data
Vendors
hcltech
Products
bigfix_service_management
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
Source: NIST NVD · Data may lag official sources by up to one minute