Terminalfour up to 8.4.1.1 User Management userLevel improper authorization

Summaryinfo

A vulnerability, which was classified as critical, was found in Terminalfour up to 8.4.1.1. The affected element is an unknown function of the component User Management Handler. The manipulation of the argument userLevel results in improper authorization. This vulnerability was named CVE-2025-58386. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Terminalfour up to 8.4.1.1. Affected is some unknown functionality of the component User Management Handler. The manipulation of the argument userLevel with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In Terminalfour 8 through 8.4.1.1, the userLevel parameter in the user management function is not subject to proper server-side authorization checks. A Power User can intercept and modify this parameter to assign the Administrator role to other existing lower-privileged accounts, or invite a new lower-privileged account and escalate its privileges. While manipulating this request, the Power User can also change the target account's password, effectively taking full control of it.

This vulnerability is traded as CVE-2025-58386 since 08/29/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. Additional levels of successful authentication are necessary for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 12/02/2025). This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Terminalfour

Version

• 8.4.1.0
• 8.4.1.1

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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