CVE-2025-59817

Authenticated root command execution via zForm_auto_config

Published Sep 25, 2025 · Updated Sep 25, 2025

Command injection in Zenitel TCIS-3+ before 9.2.3.3 allows remote authenticated users to execute arbitrary commands via its web portal. The zForm_auto_config handler incorporates attacker-controlled configuration data into a system command without neutralizing command syntax. Administrative credentials and adjacent-network access are required; injected commands run as root and grant full device control.

CVSS severity8.4
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Zenitel TCIS-3+ before 9.2.3.3 allows remote authenticated users to execute arbitrary commands via its web portal. The zForm_auto_config handler incorporates attacker-controlled configuration data into a system command without neutralizing command syntax. Administrative credentials and adjacent-network access are required; injected commands run as root and grant full device control.

The record

CVE
CVE-2025-59817
Published
Sep 25, 2025
Updated
Sep 25, 2025
Vendor
Zenitel
Product
TCIS-3+
Classifications
CWE-77, T1059
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Sep 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<9.2.3.3

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

Zenitel · TCIS-3+version=<9.2.3.3

Published CVSS scores

8.4NCSC-NLCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/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)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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