How severe is CVE-2025-58386?

CVE-2025-58386 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-58386 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-58386?

CVE-2025-58386 affects Terminalfour. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-58386?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-58386 have an EU (EUVD) identifier?

Yes. CVE-2025-58386 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-200285.

When was CVE-2025-58386 published?

CVE-2025-58386 was published on 2025-12-02 and last updated on 2026-06-17.

CVE-2025-58386

CVE-2025-58386 is a critical-severity vulnerability in Terminalfour with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-200285
Weakness: CWE-285
Affected product: Terminalfour
Published: 2025-12-02
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-58386?: 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.
How severe is CVE-2025-58386?: CVE-2025-58386 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-58386 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-58386?: CVE-2025-58386 affects Terminalfour. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-58386?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-58386 have an EU (EUVD) identifier?: Yes. CVE-2025-58386 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-200285.
When was CVE-2025-58386 published?: CVE-2025-58386 was published on 2025-12-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:terminalfour:terminalfour:*:*:*:*:*:*:*:*

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