RCE in Terra-master Terramaster_operating_system

CVE-2020-35665

An unauthenticated command-execution vulnerability exists in TerraMaster TOS through 4.2.06 via shell metacharacters in the Event parameter in include/makecvs.php during CSV creation.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.781 (99.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-35665?
CVE-2020-35665 is a critical-severity vulnerability in Terra-master Terramaster_operating_system, classified under OS Command Injection. CVSS score: 9.8/10. Published 2020-12-23.
How severe is CVE-2020-35665?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-35665 known to be exploited?
6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.