CVE-2020-15568Public exploitNetwork attack vector

Unauthenticated root command execution via dynamic method invocation

Published Jan 30, 2021 · Updated Aug 4, 2024

Code injection in TerraMaster TOS before 4.1.29 allows remote attackers to execute arbitrary commands as root through an HTTP request. In include/exportUser.php, an unauthenticated branch accepts the cla, func, and opt parameters, instantiates the named class, and invokes the named method with opt as its argument. Selecting the application class and exec method passes attacker-controlled OS commands to a root-privileged execution path without authentication.

CVSS severity9.8
Critical
EPSS probability28.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in TerraMaster TOS before 4.1.29 allows remote attackers to execute arbitrary commands as root through an HTTP request. In include/exportUser.php, an unauthenticated branch accepts the cla, func, and opt parameters, instantiates the named class, and invokes the named method with opt as its argument. Selecting the application class and exec method passes attacker-controlled OS commands to a root-privileged execution path without authentication.

The record

CVE
CVE-2020-15568
Published
Jan 30, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-913, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-913Improper Control of Dynamically-Managed Code Resources
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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