DrayTek Vigor2960 up to 1.5.1.6 mainfunction.cgi app_guest_export filename path traversal

Summaryinfo

A vulnerability was found in DrayTek Vigor2960 up to 1.5.1.6 and classified as very critical. This vulnerability affects the function app_guest_export of the file /cgi-bin/mainfunction.cgi. Such manipulation of the argument filename leads to path traversal. This vulnerability is uniquely identified as CVE-2026-129451. The attack can be launched remotely. Moreover, an exploit is present. It is suggested to upgrade the affected component. The vendor recommends: "1.5.1.6 isn't the latest version of 2960, the latest version fixes many security issues. And we have another one in our release plan which should solve the issues reported."

Detailsinfo

A vulnerability was found in DrayTek Vigor2960 up to 1.5.1.6. It has been rated as very critical. Affected by this issue is the function app_guest_export of the file /cgi-bin/mainfunction.cgi. The manipulation of the argument filename 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 advisory is available at github.com. This vulnerability is handled as CVE-2026-129451. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/14/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

The exploit is available at github.com. It is declared as proof-of-concept. The vendor recommends: "1.5.1.6 isn't the latest version of 2960, the latest version fixes many security issues. And we have another one in our release plan which should solve the issues reported."

Upgrading to version 1.5.1.7 eliminates this vulnerability. The upgrade is hosted for download at fw.draytek.com.tw.

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Productinfo

Type

• Router Operating System

Vendor

• DrayTek

Name

• Vigor2960

Version

• 1.5.1.0
• 1.5.1.1
• 1.5.1.2
• 1.5.1.3
• 1.5.1.4
• 1.5.1.5
• 1.5.1.6

License

• commercial

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Threat Intelligenceinfo

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Entryinfo

Submitinfo

Accepted

• Submit #1044961: DrayTek Vigor2960 Vigor2960 1.5.1.6 (revision 8218) Authenticated app_guest_export Path Traversal Write/Read/Delete (by eqqie)

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