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CVE-2025-64129

24
FAUCET Score

CVE-2025-64129 is an out-of-bounds write vulnerability affecting Zenitel TCIV-3+ devices, which could lead to a denial-of-service condition by crashing the device. It carries a CVSS score of 7.6 (HIGH), indicating it can be exploited remotely with low attack complexity, requiring user interaction, and impacting confidentiality, integrity, and availability. While the EPSS score is low, suggesting a minimal likelihood of exploitation, its FAUCET Risk Score is high at 85/100. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
ZenitelTCIV-3+
>= 0, <= 9.3.3.0CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 4.0

7.0HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
VS Confidentiality
LOW
VS Integrity
LOW
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 38th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsa-25-329-03.json
wiki.zenitel.com / wiki/Downloads
cisa.gov / news-events/ics-advisories/icsa-25-329-03