What’s Vulnerable › Vulnerabilities

CVE-2020-15568

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 29.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-30 · updated 2026-06-17
• Weakness: CWE-913

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.

Affected products

• Terra-Master Tos: before 4.1.29 — fixed in 4.1.29

How to fix

Upgrade to a fixed version: Terra-Master Tos 4.1.29. Check the vendor advisory for mitigations.

References

• https://help.terra-master.com/TOS/view/
• https://ssd-disclosure.com/ssd-advisory-terramaster-os-exportuser-php-remote-code-execution/
• https://help.terra-master.com/TOS/view/
• https://ssd-disclosure.com/ssd-advisory-terramaster-os-exportuser-php-remote-code-execution/

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