CVE-2020-12053

Name: CVE-2020-12053
Creator: NVD / NIST
Published: 2020-06-22T20:15:11.1+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.68%

Last modified Jun 17, 2026

CVE-2020-12053 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In Unisys Stealth 3.4.x, 4.x and 5.x before 5.0.026, if certificate-based authorization is used without HTTPS, an endpoint could be authorized without a private key.. EPSS estimates a 0.68% chance of exploitation in the next 30 days.

Description

In Unisys Stealth 3.4.x, 4.x and 5.x before 5.0.026, if certificate-based authorization is used without HTTPS, an endpoint could be authorized without a private key.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.68%

47.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Unisys	Stealth	>= 3.4, < 5.0.026

References

https://public.support.unisys.com/common/public/vulnerability/NVD_Detail_Rpt.aspx?ID=54Vendor Advisory
https://public.support.unisys.com/common/public/vulnerability/NVD_Detail_Rpt.aspx?ID=54Vendor Advisory

Timeline

Published: Jun 22, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12053?

In Unisys Stealth 3.4.x, 4.x and 5.x before 5.0.026, if certificate-based authorization is used without HTTPS, an endpoint could be authorized without a private key.

How severe is CVE-2020-12053?

CVE-2020-12053 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.68% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12053?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-12053?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST