CVE-2026-95378
Received Received - Intake

BaseFortify

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: cf9c5165-6fe5-4ec0-b5f1-404f1df30a4e

Description
Path traversal in the certificate upload endpoint (/api/certificate/upload) of the turbineweb web interface in Zenitel VSFF6, VSFF8, VSFF8MP, VSFF8MN, and VSFT devices with software versions from 10.0.3.0 before 10.1.3.0 allows authenticated administrators to write arbitrary files as root via a crafted filename parameter in a multipart upload request when the type field is set to any value other than https_certificate. In that case, both path validation and certificate content validation are skipped. This can be escalated to arbitrary code execution as root, for example by overwriting startup scripts or planting SSH keys.

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Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-95378
EUVD
EUVD-2026-125524

Affected Vendors & Products

Showing 5 associated CPEs
Vendor Product Version / Range
Zenitel VSFF6 From 10.0.3.0 (inc) to 10.1.3.0 (exc)
Zenitel VSFF8 From 10.0.3.0 (inc) to 10.1.3.0 (exc)
Zenitel VSFF8MP From 10.0.3.0 (inc) to 10.1.3.0 (exc)
Zenitel VSFF8MN From 10.0.3.0 (inc) to 10.1.3.0 (exc)
Zenitel VSFT From 10.0.3.0 (inc) to 10.1.3.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-434 The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

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Executive Summary

This is a path traversal vulnerability in Zenitel devices' certificate upload endpoint. Authenticated administrators can exploit it by uploading a file with a crafted filename to write arbitrary files as root. The vulnerability occurs when the type field is not set to https_certificate, bypassing path and certificate validation.

Detection Guidance

Detecting this vulnerability requires checking for unauthorized file writes or unusual activity in the certificate upload endpoint. Monitor logs for multipart upload requests to /api/certificate/upload with type fields not set to https_certificate. Inspect system files for unexpected modifications, especially in startup scripts or SSH directories.

Impact Analysis

This vulnerability allows attackers with admin access to overwrite critical system files, such as startup scripts or SSH keys, leading to full system compromise. It enables arbitrary code execution as root, giving complete control over the affected device.

Mitigation Strategies

Immediately update affected Zenitel devices to software version 10.1.3.0 or later. Restrict access to the certificate upload endpoint to trusted administrators only. Review system files for signs of compromise, particularly startup scripts and SSH configurations. Disable unnecessary services and enforce strict input validation for file uploads.

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