Buffer overflow in Zenitel Tciv-3+

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.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (32.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H.

Affected products

Zenitel Tciv-3+ — versions 0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

Frequently asked questions

What is CVE-2025-64129?: CVE-2025-64129 is a high-severity vulnerability in Zenitel Tciv-3+, classified under Out-of-bounds Write. CVSS score: 7.6/10. Published 2025-11-26.
How severe is CVE-2025-64129?: High severity. CVSS v3 base score is 7.6 out of 10.