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Vulnerabilities

Vulnerability · 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.

Published Nov 26, 2025 · catalog updated Nov 26, 2025 · Zenitel TCIV-3+

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-64129. EPSS is 0.47%. Act only if a listed version of Zenitel TCIV-3+ is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.47%
Remediation
Vendor / distro source
Affected products
vendor Zenitel TCIV-3+ 0 ≤9.3.3.0

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Zenitel TCIV-3+ 0 ≤9.3.3.00 ≤9.3.3.0

How to fix CVE-2025-64129

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-64129. EPSS is 0.47%. Act only if a listed version of Zenitel TCIV-3+ is installed.

Which versions are affected?

Compare what you have installed with Zenitel TCIV-3+ 0 ≤9.3.3.0 0 ≤9.3.3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.47%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 26, 2025 · EUVD

    Detected

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

  2. Nov 26, 2025 · EUVD

    Updated

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

Sources

  • CVE.orgVulnerability recordCVE-2025-64129

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-64129

    30-day exploitation probability 0.47%

    first.org
  • EUVDVulnerability recordEUVD-2025-199737

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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 5, 2026
  • CVE.orgOct 28, 2026
  • EUVDOct 28, 2026