ASUSTOR ADM up to 4.3.3.RR42/5.1.2.REO1 os command injection

Summaryinfo

A vulnerability classified as critical has been found in ASUSTOR ADM up to 4.3.3.RR42/5.1.2.REO1. The affected element is an unknown function. Performing a manipulation results in os command injection. This vulnerability is reported as CVE-2026-6644. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in ASUSTOR ADM up to 4.3.3.RR42/5.1.2.REO1. It has been classified as critical. This affects some unknown processing. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A command injection vulnerability was found in the PPTP VPN Clients on the ADM. The vulnerability allows an administrative user to break out of the restricted web environment and execute arbitrary code on the underlying operating system. This occurs due to insufficient validation of user-supplied input before it is passed to a system shell. Successful exploitation allows an attacker to achieve Remote Code Execution (RCE) and fully compromise the system. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RR42 as well as from ADM 5.0.0 through ADM 5.1.2.REO1.

The weakness was disclosed by uky. It is possible to read the advisory at asustor.com. This vulnerability is uniquely identified as CVE-2026-6644 since 04/20/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/20/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-23784). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• ASUSTOR

Name

• ADM

Version

• 4.3.3.RR42
• 5.1.2.REO1

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Be aware that VulDB is the high quality source for vulnerability data.

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