What is CVE-2026-21767?

CVE-2026-21767 is a medium-severity vulnerability in Hclsoftware Bigfix Platform, classified under Missing Authentication for Critical Function. CVSS score: 4.0/10. Published 2026-04-02.

How severe is CVE-2026-21767?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Auth bypass in Hclsoftware Bigfix Platform

CVE-2026-21767

HCL BigFix Platform is affected by insufficient authentication. The application might allow users to access sensitive areas of the application without proper authentication.

Vulnerability class: Broken Authentication

Published 2026-04-02 · last modified 2026-10-26.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.6th percentile), scored 2026-11-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Hclsoftware Bigfix Platform — versions 11.0.0 - 11.0.5
Hcltech Bigfix Platform

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

support.hcl-software.com/csm (Vendor Advisory)

Frequently asked questions

What is CVE-2026-21767?: CVE-2026-21767 is a medium-severity vulnerability in Hclsoftware Bigfix Platform, classified under Missing Authentication for Critical Function. CVSS score: 4.0/10. Published 2026-04-02.
How severe is CVE-2026-21767?: Medium severity. CVSS v3 base score is 4.0 out of 10.