How severe is CVE-2025-64129?

CVE-2025-64129 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability high.

Is CVE-2025-64129 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-64129?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-64129 have an EU (EUVD) identifier?

Yes. CVE-2025-64129 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199737.

When was CVE-2025-64129 published?

CVE-2025-64129 was published on 2025-11-26 and last updated on 2026-06-17.

CVE-2025-64129

CVE-2025-64129 is a high-severity vulnerability with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.6)
CVSS v4: 7.0
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199737
Weakness: CWE-787
Published: 2025-11-26
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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.
How severe is CVE-2025-64129?: CVE-2025-64129 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability high.
Is CVE-2025-64129 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-64129?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-64129 have an EU (EUVD) identifier?: Yes. CVE-2025-64129 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199737.
When was CVE-2025-64129 published?: CVE-2025-64129 was published on 2025-11-26 and last updated on 2026-06-17.

References

Other CWE-787 (Out-of-bounds Write) vulnerabilities

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