Skip to content
Fencer Intel
critical 9.8

CVE-2020-28188 in the critical feed json

Remote Command Execution (RCE) vulnerability in TerraMaster TOS <= 4.2.06 allow remote unauthenticated attackers to inject OS commands via…

published 5y ago modified 4mo ago also EUVD-2020-20673

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
96.5%
EPSS 96.5% chance of exploitation in 30 days, percentile 99.8%
public exploits
1
Metasploit, plus a Nuclei check

Summary

Remote Command Execution (RCE) vulnerability in TerraMaster TOS <= 4.2.06 allow remote unauthenticated attackers to inject OS commands via /include/makecvs.php in Event parameter.

Is CVE-2020-28188 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Timeline

  1. First public exploit (Metasploit exploit/linux/http/terramaster_unauth_rce_cve_2020_35665)
  2. Published

Exploit prediction

96.45% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/linux/http/terramaster_unauth_rce_cve_2020_35665 TerraMaster TOS 4.2.06 or lower - Unauthenticated Remote Code Execution metasploit exploit, excellent rank, 2020-12-12
  • Nuclei template TerraMaster TOS - Unauthenticated Remote Command Execution nuclei detection template
  • ihteam.net https://www.ihteam.net/advisory/terramaster-tos-multiple-vulnerabilities/ referenced PoC, tagged "exploit" by a source, unverified
  • research.checkpoint.com https://research.checkpoint.com/2021/freakout-leveraging-newest-vulnerabilities-for-creating-a-botnet/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.