CVE-2025-64129

Zenitel TCIV-3+ is vulnerable to an out-of-bounds write vulnerability, which could allow a remote attacker to crash the device.

CVSS 4.0

7.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2025-11-26

Modified

2026-10-18

Record from

the NVD, synced 2026-10-19

References

• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsa-25-329-03.json
• https://wiki.zenitel.com/wiki/Downloads#Station_and_Device_Firmware_Package_.28VS-IS.29
• https://www.cisa.gov/news-events/ics-advisories/icsa-25-329-03

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