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
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.89%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 1.89% probability · 79th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- terra-master/tos
- Source
- cve@mitre.org
EPSS 1.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.ihteam.net/advisory/terramaster-tos-multiple-vulnerabilities/Exploit, Third Party Advisory
- https://www.ihteam.net/advisory/terramaster-tos-multiple-vulnerabilities/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.