What is CVE-2021-28492?

CVE-2021-28492 is a medium-severity vulnerability in Unisys Stealth. CVSS score: 4.9/10. Published 2021-04-20.

How severe is CVE-2021-28492?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Vulnerability in Unisys Stealth

CVE-2021-28492

Unisys Stealth (core) 5.x before 5.0.048.0, 5.1.x before 5.1.017.0, and 6.x before 6.0.037.0 stores passwords in a recoverable format.

Published 2021-04-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (56.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Unisys Stealth

References

public.support.unisys.com/common/public/vulnerability/NVD_Home.aspx (Vendor Advisory)
public.support.unisys.com/common/public/vulnerability/NVD_Detail_Rpt.aspx (Vendor Advisory)

Frequently asked questions

What is CVE-2021-28492?: CVE-2021-28492 is a medium-severity vulnerability in Unisys Stealth. CVSS score: 4.9/10. Published 2021-04-20.
How severe is CVE-2021-28492?: Medium severity. CVSS v3 base score is 4.9 out of 10.