CVE-2026-95377
OS command injection via DHCP option 66 in Zenitel EdgeAudioClient TFTP provisioning
Published Nov 13, 2026
CVSS 4.0 · 9.4 Critical
EPSS n/a
KEV · Not listed
Description
OS command injection in the TFTP provisioning module of Zenitel EdgeAudioClient before 9.6.3.0, and 10.x before 10.1.3.0, on VSFF6, VSFF8, VSFF8MP, VSFF8MN, and VSFT devices allows unauthenticated adjacent attackers to execute arbitrary commands as root via a crafted DHCP option 66 (TFTP Server Name) value supplied by a rogue DHCP server on the same network segment. The DHCP-supplied value is passed to a shell without sanitization. Devices using DHCP, the default configuration, are affected on every boot and lease renewal.
The same injection is also reachable via the config_update_tftp_server and sw_update_tftp_server configuration fields by an attacker able to modify the device configuration.
The same injection is also reachable via the config_update_tftp_server and sw_update_tftp_server configuration fields by an attacker able to modify the device configuration.
Affected Products
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CVE record
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NVD configurations
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Red Hat packages
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OpenCVE enrichment
No data
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
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| Zenitel | VSFF6 | unaffected |
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| Zenitel | VSFF8 | unaffected |
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| Zenitel | VSFF8MP | unaffected |
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| Zenitel | VSFF8MN | unaffected |
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| Zenitel | VSFT | unaffected |
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No data.
No data.
No data available yet.
Remediation
Vendor Solution
Affected devices should upgrade to version 9.6.3.0 (and newer) or 10.1.3.0 (and newer) depending on environment.
Tracking
Advisories
Metrics
Attack Vector Adjacent Network
Attack Complexity Low
Privileges Required None
Attack Requirements None
User Interaction None
Vulnerable System Confidentiality Impact High
Vulnerable System Integrity Impact High
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact High
Subsequent System Integrity Impact High
Subsequent System Availability Impact High
No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
No EPSS score available.
Key SSVC decision points have not yet been added.
References
History
Nov 13, 2026 4:00 PM
Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| Description | OS command injection in the TFTP provisioning module of Zenitel EdgeAudioClient before 9.6.3.0, and 10.x before 10.1.3.0, on VSFF6, VSFF8, VSFF8MP, VSFF8MN, and VSFT devices allows unauthenticated adjacent attackers to execute arbitrary commands as root via a crafted DHCP option 66 (TFTP Server Name) value supplied by a rogue DHCP server on the same network segment. The DHCP-supplied value is passed to a shell without sanitization. Devices using DHCP, the default configuration, are affected on every boot and lease renewal. The same injection is also reachable via the config_update_tftp_server and sw_update_tftp_server configuration fields by an attacker able to modify the device configuration. | |
| Title | OS command injection via DHCP option 66 in Zenitel EdgeAudioClient TFTP provisioning | |
| Weaknesses | CWE-78 | |
| References |
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| Metrics |
cvssV4_0
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Subscriptions
No data.
Weaknesses
