DrayTek Vigor2960 1.5.1.6 mainfunction.cgi?action=doWebBackup sub_1E084 option path traversal

Summaryinfo

A vulnerability has been found in DrayTek Vigor2960 1.5.1.6 and classified as very critical. This affects the function sub_1E084 of the file /cgi-bin/mainfunction.cgi?action=doWebBackup. This manipulation of the argument option causes path traversal. This vulnerability is handled as CVE-2026-129450. The attack can be initiated remotely. Additionally, an exploit exists. The affected component should be upgraded. 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 1.5.1.6. It has been declared as very critical. Affected by this vulnerability is the function sub_1E084 of the file /cgi-bin/mainfunction.cgi?action=doWebBackup. The manipulation of the argument option with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-129450. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/14/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

It is possible to download the exploit 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.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Router Operating System

Vendor

• DrayTek

Name

• Vigor2960

Version

• 1.5.1.6

License

• commercial

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Threat Intelligenceinfo

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Submitinfo

Accepted

• Submit #1044958: DrayTek Vigor2960 Vigor2960 1.5.1.6 (revision 8218) Authenticated doWebBackup Path Traversal and Archive Command Inj (by eqqie)

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