CVE-2020-28190

Name: CVE-2020-28190
Creator: NVD / NIST
Published: 2020-12-24T15:15:13.467+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2020-28190 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. TerraMaster TOS <= 4.2.06 was found to check for updates (of both system and applications) via an insecure channel (HTTP). Man-in-the-middle attackers are able to intercept these requests and serve a weaponized/infected version of applications or updates.. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

Description

TerraMaster TOS <= 4.2.06 was found to check for updates (of both system and applications) via an insecure channel (HTTP). Man-in-the-middle attackers are able to intercept these requests and serve a weaponized/infected version of applications or updates.

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

0.78%

51.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Terra-Master	Tos	<= 4.2.06

References

https://www.ihteam.net/advisory/terramaster-tos-multiple-vulnerabilities/Exploit, Third Party Advisory
https://www.terra-master.com/Vendor Advisory
https://www.ihteam.net/advisory/terramaster-tos-multiple-vulnerabilities/Exploit, Third Party Advisory
https://www.terra-master.com/Vendor Advisory

Timeline

Published: Dec 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-28190?

How severe is CVE-2020-28190?

CVE-2020-28190 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2020-28190?

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-2020-28190?

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

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Source: NVD / NIST