CVE-2020-29189
Incorrect Access Control vulnerability in TerraMaster TOS <= 4.2.06 allows remote authenticated...
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
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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
- Record
CVE-2020-29189- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - CVSS 2.0
- 5.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:N - Updated
- 2026-11-02
CVE List No score
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
- Record
CVE-2020-29189- Updated
- 2026-11-02
EUVDEUVD-2020-21569 No score
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
- Record
EUVD-2020-21569- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-fjv4-6mwc-7524
Incorrect Access Control vulnerability in TerraMaster TOS <= 4.2.06 allows remote authenticated...
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
- Record
GHSA-fjv4-6mwc-7524- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-29189 is a high vulnerability (CVSS 8.1) in Terra-master Tos, published December 24, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.89%, the 79th percentile. No source names a fixed version.