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Fencer Vulns
critical 9.8

CVE-2020-15568 in the critical feed json

TerraMaster TOS before 4.1.29 has Invalid Parameter Checking that leads to code injection as root.

published 2021-01-30 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-7555

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
29.2%
EPSS 29.2% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known, plus a Nuclei check

Summary

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.

Patch / fix

  • terra-master tos 4.1.29

Exploit prediction

29.20% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template TerraMaster TOS <.1.29 - Remote Code Execution nuclei detection template
  • ssd-disclosure.com https://ssd-disclosure.com/ssd-advisory-terramaster-os-exportuser-php-remote-code-execution/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-913 Improper Control of Dynamically-Managed Code Resources

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.