Zenitel VSFF6/VSFF8/VSFF8MP/VSFF8MN/VSFT prior 10.1.3.0 Certificate Upload /api/certificate/upload type path traversal

Summaryinfo

A vulnerability has been found in Zenitel VSFF6, VSFF8, VSFF8MP, VSFF8MN and VSFT and classified as very critical. This affects an unknown part of the file /api/certificate/upload of the component Certificate Upload. The manipulation of the argument Type leads to path traversal. This vulnerability is listed as CVE-2026-95378. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Zenitel VSFF6, VSFF8, VSFF8MP, VSFF8MN and VSFT and classified as very critical. This issue affects an unknown part of the file /api/certificate/upload of the component Certificate Upload. The manipulation of the argument type with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at zenitel.com. The identification of this vulnerability is CVE-2026-95378 since 09/22/2026. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are necessary for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/13/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 10.1.3.0 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Zenitel

Name

• VSFF6
• VSFF8
• VSFF8MN
• VSFF8MP
• VSFT

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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