← Vulnerability feed

Vulnerability record · CVE-2020-15568 · published 30 January 2021

CVE-2020-15568: Terra-master tos improper control of dynamically-managed code vulnerability

Terra Master · Tos

TerraMaster TOS before 4.1.29 has Invalid Parameter Checking that leads to code injection as root. This is a dynamic class method invocation vulnerability in include/exportUser.php, in which an attacker can trigger a call to the exec method with (for example) OS commands in the opt parameter.

9.8 CVSS 3.1 Critical EPSS 29% · top 1.9% CWE-913 · Improper control of dynamically-managed code
9.8CVSS 3.1 base score, v2 10.0
29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

TerraMaster TOS before 4.1.29 has Invalid Parameter Checking that leads to code injection as root. This is a dynamic class method invocation vulnerability in include/exportUser.php, in which an attacker can trigger a call to the exec method with (for example) OS commands in the opt parameter.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://help.terra-master.com/TOS/view/ ProductVendor Advisory
https://ssd-disclosure.com/ssd-advisory-terramaster-os-exportuser-php-remote-code-execution/ ExploitThird Party Advisory
https://help.terra-master.com/TOS/view/ ProductVendor Advisory
https://ssd-disclosure.com/ssd-advisory-terramaster-os-exportuser-php-remote-code-execution/ ExploitThird Party Advisory

Track CVE-2020-15568 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-45837Terra-master tos vulnerabilityIt is possible to execute arbitrary commands as root in Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517) by sending a specifically crafted in…EPSS 16%9.8CVE-2021-45840Terra-master tos vulnerabilityIt is possible to execute arbitrary commands as root in Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517) by sending specifically crafted inpu…EPSS 3.9%9.8CVE-2020-28187Terra-master tos path traversal vulnerabilityMultiple directory traversal vulnerabilities in TerraMaster TOS <= 4.2.06 allow remote authenticated attackers to read, edit or delete any file withi…EPSS 16%9.8CVE-2020-28188TerraMaster TOS unauthenticated OS command injection in makecvs.phpTerraMaster TOS 4.2.06 and earlier passes the Event parameter of /include/makecvs.php into OS commands without sanitization, allowing command injecti…EPSS 97%analysed8.8CVE-2021-45836Terra-master tos vulnerabilityAn authenticated attacker can execute arbitrary commands as root in Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517) by injecting a malicious…EPSS 2.5%8.1CVE-2021-45841Terra-master tos improper authentication vulnerabilityIn Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517), an attacker can self-sign session cookies by knowing the target's MAC address and the us…EPSS 8.4%8.1CVE-2020-29189Terra-master tos vulnerabilityIncorrect Access Control vulnerability in TerraMaster TOS <= 4.2.06 allows remote authenticated attackers to bypass read-only restriction and obtain …EPSS 1.9%7.5CVE-2021-45842Terra-master tos vulnerabilityIt is possible to obtain the first administrator's hash set up in Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517) on the system as well as o…EPSS 2.4%

Source: NIST National Vulnerability Database (record CVE-2020-15568), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.