---
id: CVE-2026-113393
title: DrayTek Vigor2960 commonupload mainfunction.cgi unrestricted upload
summary: >-
  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 upload_pa…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-434
  - CWE-284
vendor: DrayTek
product: Vigor2960
affected:
  - Vigor2960 1.5.1.6 Revision 8218
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-20T13:39:55.414969Z'
exploitAvailable: true
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T13:40:05.782Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-113393'
references:
  - url: 'https://vuldb.com/vuln/422669'
    label: >-
      VDB-422669 | DrayTek Vigor2960 commonupload mainfunction.cgi unrestricted
      upload
  - url: 'https://vuldb.com/vuln/422669/cti'
    label: 'VDB-422669 | CTI Indicators (IOB, IOC, TTP, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-113393'
    label: CVE-2026-113393 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/992246'
    label: >-
      Submit #992246 | DrayTek Vigor2960 Vigor2960 1.5.1.6 (revision 8218)
      Authenticated commonupload Arbitrary File Clobber and Command In
  - url: >-
      https://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0010-authenticated-commonupload-arbitrary-file-clobber
  - url: >-
      https://fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.7/Vigor2960_v1.5.1.7.zip
tags:
  - cve.org
  - exploit-available
ingestedAt: '2026-10-20T14:08:00.573Z'
---

## Overview

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 upload_path/upload_name 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

- `Vigor2960 1.5.1.6 Revision 8218`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.