CVE-2020-35665
CriticalExploitedPublic exploitAn 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.
Published Dec 23, 2020 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2020-35665 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Terramaster Operating System (Terra-Master).
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Jan 14, 2021. Public exploit code is available.
- EPSS estimates a 78% probability of exploitation in the next 30 days.
- Fixed versions are available, including Terramaster Operating System <=4.2.06, Terramaster Operating System 4.2.06.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
78%
Higher than 99.5% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jan 14, 2021 | n/a | Not reported |
| CIRCL KEV | Oct 14, 2023 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Terramaster Operating SystemTerra-Master | See advisory | 4.2.06 |
Patched Releases
Terramaster Operating System
<=4.2.06
Timeline
Publicly disclosed
Dec 23, 2020
Added to Industry KEV feed
Jan 14, 2021
Added to CIRCL KEV
Oct 14, 2023
Last updated
Nov 21, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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.
Affected: Terramaster Operating System (Terra-Master). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Jan 14, 2021.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Terramaster Operating System <=4.2.06, Terramaster Operating System 4.2.06.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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