DrayTek Vigor2960 1.5.1.6 Revision 8218 commonupload mainfunction.cgi upload_path/upload_name unrestricted upload

Summaryinfo

A vulnerability identified as critical has been detected in DrayTek Vigor2960 1.5.1.6 Revision 8218. Impacted is an unknown function of the file /cgi-bin/mainfunction.cgi of the component commonupload. The manipulation of the argument upload_path/upload_name leads to unrestricted upload. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is traded as CVE-2026-113393. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. You should upgrade the affected component. The vendor explains: "2960 1.5.1.7 has corrected many security issues. And 2960 is EoS with limited support, only major issues would be reviewed(e.g. unauthenticated vuln.)".

Detailsinfo

A vulnerability, which was classified as critical, has been found in DrayTek Vigor2960 1.5.1.6 Revision 8218. This issue affects some unknown functionality of the file /cgi-bin/mainfunction.cgi of the component commonupload. The manipulation of the argument upload_path/upload_name with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-113393. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1608.002 for this issue.

The exploit is available at github.com. It is declared as proof-of-concept. The vendor explains: "2960 1.5.1.7 has corrected many security issues. And 2960 is EoS with limited support, only major issues would be reviewed(e.g. unauthenticated vuln.)".

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 Revision 8218

License

• commercial

Support

• end of life

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

Submitinfo

Accepted

• Submit #992246: DrayTek Vigor2960 Vigor2960 1.5.1.6 (revision 8218) Authenticated commonupload Arbitrary File Clobber and Command In (by eqqie)

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