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CVE-2020-29189

27
FAUCET Score

CVE-2020-29189 describes an Incorrect Access Control vulnerability in TerraMaster TOS versions up to and including 4.2.06. This flaw allows remote authenticated attackers to bypass read-only restrictions and gain full access to any folder on the Network Attached Storage (NAS) device. With a CVSS score of 8.1 (HIGH), this vulnerability has a low attack complexity and can lead to high confidentiality and integrity impacts. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there is minimal community discussion or media coverage, its potential for full data access makes it a significant concern for affected systems.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.2.06CPE matchmatch criteria
cpe:2.3:o:terra-master:tos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.85%
Probability of exploitation in next 30 days
EPSS Percentile
76.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0185 is in the 75th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ihteam.net / advisory/terramaster-tos-multiple-vulnerabilities
ExploitThird Party Advisory