What is CVE-2023-28021?

CVE-2023-28021 is a medium-severity vulnerability in Hcl Software Bigfix Webui, classified under Inadequate Encryption Strength. CVSS score: 5.9/10. Published 2023-07-18.

How severe is CVE-2023-28021?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Hcl Software Bigfix Webui

CVE-2023-28021

The BigFix WebUI uses weak cipher suites.

Published 2023-07-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Hcl Software Bigfix Webui — versions All
Hcltech Bigfix Webui

Weakness classification (CWE)

CWE-326 — Inadequate Encryption Strength

References

support.hcltechsw.com/csm (Vendor Advisory)

Frequently asked questions

What is CVE-2023-28021?: CVE-2023-28021 is a medium-severity vulnerability in Hcl Software Bigfix Webui, classified under Inadequate Encryption Strength. CVSS score: 5.9/10. Published 2023-07-18.
How severe is CVE-2023-28021?: Medium severity. CVSS v3 base score is 5.9 out of 10.