CVE-2025-58386Network attack vector

Administrator escalation via unchecked userLevel parameter

Published Dec 2, 2025 · Updated Dec 3, 2025

Privilege escalation in Terminalfour 8 through 8.4.1.1 allows remote authenticated users to obtain Administrator access. The user management function accepts a client-modified userLevel parameter without enforcing server-side authorization, allowing assignment or invitation at a higher privilege. Power User access is required; the request can also reset the target account's password, enabling full control of an existing or newly invited account.

CVSS severity9.8
Critical
EPSS probability0.34%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Terminalfour 8 through 8.4.1.1 allows remote authenticated users to obtain Administrator access. The user management function accepts a client-modified userLevel parameter without enforcing server-side authorization, allowing assignment or invitation at a higher privilege. Power User access is required; the request can also reset the target account's password, enabling full control of an existing or newly invited account.

The record

CVE
CVE-2025-58386
Published
Dec 2, 2025
Updated
Dec 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-285, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 2025Record 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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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