What is CVE-2020-29189?

CVE-2020-29189 is a high-severity vulnerability in Terra-Master Tos. CVSS score: 8.1/10. Published 2020-12-24.

How severe is CVE-2020-29189?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Terra-Master Tos

CVE-2020-29189

Incorrect Access Control vulnerability in TerraMaster TOS <= 4.2.06 allows remote authenticated attackers to bypass read-only restriction and obtain full access to any folder within the NAS

Published 2020-12-24 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.019 (78.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: +0.000

Affected products

Terra-Master Tos

References

af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
www.ihteam.net/advisory/terramaster-tos-multiple-vulnerabilities/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-29189?: CVE-2020-29189 is a high-severity vulnerability in Terra-Master Tos. CVSS score: 8.1/10. Published 2020-12-24.
How severe is CVE-2020-29189?: High severity. CVSS v3 base score is 8.1 out of 10.