CVE-2026-21806: HCL BigFix Service Management was affected with Admin Session Concurrency vulnerability (CVE-2026-21806)
HCL Software · HCL BigFix Service Management
Affected: HCL Software HCL BigFix Service Management · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 9% of scored CVEs
DescriptionCVE.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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- HCL Software · HCL BigFix Service ManagementVersion 27
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- HCL Software
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-21806 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.