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CVE-2025-58386

Terminalfour broken access control

9.8 CRITICALEPSS 0.34%
  1. Published2 Dec 2025

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Terminalfour≥ 8.0.0 < 8.4.1.2

Remediation

Fixed in
Terminalfour≥ 8.4.1.2

References

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Frequently asked

Is CVE-2025-58386 being actively exploited?

CVE-2025-58386 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.34%.

How severe is CVE-2025-58386?

CVE-2025-58386 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.34% probability of exploitation.

Which products are affected by CVE-2025-58386?

Affected products include Terminalfour.

How do I fix CVE-2025-58386?

Upgrade affected software to a fixed version, for example Terminalfour 8.4.1.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-58386 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.