Critical severity · published Nov 26, 2025
CVE-2025-64127
Zenitel TCIV-3+ OS Command Injection
10.0
CVSS
2.3%
EPSS
No
On KEV
Description
An OS command injection vulnerability exists due to insufficient
sanitization of user-supplied input. The application accepts parameters
that are later incorporated into OS commands without adequate
validation. This could allow an unauthenticated attacker to execute
arbitrary commands remotely.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TC
TCIV-3+ · Zenitel
through 9.3.3.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64127
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64127
github.com
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsa-25-329-03.json
wiki.zenitel.com
https://wiki.zenitel.com/wiki/Downloads#Station_and_Device_Firmware_Package_.28VS-IS.29
www.cisa.gov
https://www.cisa.gov/news-events/ics-advisories/icsa-25-329-03
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