CVE-2020-28214

Name: CVE-2020-28214
Creator: NVD / NIST
Published: 2020-12-11T01:15:11.407+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.72%

Last modified Jun 17, 2026

CVE-2020-28214 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A CWE-760: Use of a One-Way Hash with a Predictable Salt vulnerability exists in Modicon M221 (all references, all versions), that could allow an attacker to pre-compute the hash value using dictionary attack technique such as rainbow tables, effectively disabling the protection that an unpredictable salt would provide.. EPSS estimates a 0.72% chance of exploitation in the next 30 days.

Description

A CWE-760: Use of a One-Way Hash with a Predictable Salt vulnerability exists in Modicon M221 (all references, all versions), that could allow an attacker to pre-compute the hash value using dictionary attack technique such as rainbow tables, effectively disabling the protection that an unpredictable salt would provide.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.72%

49.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-760

Affected Software

Vendor	Product	Versions
Schneider-Electric	Modicon M221 Firmware	All versions

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04Third Party Advisory, US Government Resource
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04Third Party Advisory, US Government Resource
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/Vendor Advisory

Timeline

Published: Dec 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-28214?

How severe is CVE-2020-28214?

CVE-2020-28214 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.72% probability of exploitation in the next 30 days.

How do I fix CVE-2020-28214?

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-2020-28214?

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

Scan your code now

Source: NVD / NIST