CVE-2025-64126Network attack vector

Unauthenticated command execution via unvalidated IP parameter

Published Nov 26, 2025 · Updated Dec 3, 2025

OS command injection in Zenitel TCIV-3+ 9.3.3.0 and earlier allows remote attackers to execute arbitrary commands over the network. A legacy web interface component passes a user-supplied parameter into an OS command without validating it as an IP address or filtering shell metacharacters. No authentication or user interaction is required, and the consequence is arbitrary command execution on the intercom.

CVSS severity9.8
Critical
EPSS probability2.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Zenitel TCIV-3+ 9.3.3.0 and earlier allows remote attackers to execute arbitrary commands over the network. A legacy web interface component passes a user-supplied parameter into an OS command without validating it as an IP address or filtering shell metacharacters. No authentication or user interaction is required, and the consequence is arbitrary command execution on the intercom.

The record

CVE
CVE-2025-64126
Published
Nov 26, 2025
Updated
Dec 3, 2025
Vendor
Zenitel
Product
TCIV-3+
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 26, 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?

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

  1. Affected versionversion=0 <=9.3.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zenitel · TCIV-3+version=0 <=9.3.3.0

Published CVSS scores

10.0ICS-CERT CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:H
9.8CISACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0ICS-CERT CNACVSS:3.1/AV:N/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

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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