CVE-2026-113393: DrayTek Vigor2960 commonupload mainfunction.cgi unrestricted upload
A vulnerability was determined in DrayTek Vigor2960 1.5.1.6 Revision 8218. This issue affects some unknown processing of the file /cgi-bin/mainfunction.cgi of the component commonupload. Executing a manipulation of the argument uploadpath/uploadname can lead to unrestricted upload. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. Upgrading to version 1.5.1.7 is capable of addressing this issue. It is advisable to 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.)". This vulnerability only affects products that are no longer supported by the maintainer.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
DrayTek Vigor2960to a version that resolves this vulnerability.Fixed in 1.5.1.7
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The CVSS vector indicates that the attacker needs low privileges. Exploitation can be performed remotely and does not require user interaction.
Is exploit code available publicly?
Yes. The exploit has been publicly disclosed and may be used by attackers, increasing the urgency of remediation for exposed systems.
What remediation is available for affected devices?
Upgrade the Vigor2960 firmware to version 1.5.1.7, which is identified as addressing the issue. The affected product is end-of-support, and the vendor states that support is limited to review of major issues.