DrayTek Vigor2960 1.5.1.6 mainfunction.cgi set_table jsondata command injection

Summaryinfo

A vulnerability was found in DrayTek Vigor2960 1.5.1.6. It has been classified as very critical. This issue affects the function set_table of the file /cgi-bin/mainfunction.cgi. Performing a manipulation of the argument jsondata results in command injection. This vulnerability was named CVE-2026-129452. The attack may be initiated remotely. In addition, an exploit is available. Upgrading the affected component is recommended. 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 classified as very critical has been found in DrayTek Vigor2960 1.5.1.6. This affects the function set_table of the file /cgi-bin/mainfunction.cgi. The manipulation of the argument jsondata with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-129452. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are necessary for exploitation. Technical details and a public exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/14/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The exploit is shared for download 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

• 1.5.1.6

License

• commercial

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Submitinfo

Accepted

• Submit #1044962: DrayTek Vigor2960 Vigor2960 1.5.1.6 (revision 8218) Authenticated set_table Config-Field Command Injection (by eqqie)

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