What is CVE-2026-56592?

CVE-2026-56592 is a medium-severity vulnerability in Hcl Software Bigfix Service Management, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 6.5/10. Published 2026-09-18.

How severe is CVE-2026-56592?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Hcl Software Bigfix Service Management

CVE-2026-56592

HCL BigFix Service Management is affected by an Improper Authentication validation vulnerability related to inadequate account lockouts, which could allow an unauthenticated attacker to execute sustained brute-force attacks against the login interface, resulting in unauthorized system access.

Published 2026-09-18 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.

EPSS exploit prediction

EPSS: 0.003 (21.0th percentile), scored 2026-11-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.003 · change: -0.002

Affected products

Hcl Software Bigfix Service Management — versions v27
Hcltech Bigfix Service Management — versions 23, 27

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

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

Frequently asked questions

What is CVE-2026-56592?: CVE-2026-56592 is a medium-severity vulnerability in Hcl Software Bigfix Service Management, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 6.5/10. Published 2026-09-18.
How severe is CVE-2026-56592?: Medium severity. CVSS v3 base score is 6.5 out of 10.