---
id: CVE-2026-113391
title: >-
  DrayTek Vigor2960 Upload Endpoint mainfunction.cgi uploadlangs command
  injection
summary: >-
  A vulnerability has been found in DrayTek Vigor2960 1.5.1.6 Revision 8218.
  This affects the function uploadlangs of the file /cgi-bin/mainfunction.cgi of
  the component Upload Endpoint. Such manipulation leads to command injection.
  The at…
severity: critical
cvss: 9.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-77
  - CWE-74
vendor: DrayTek
product: Vigor2960
affected:
  - Vigor2960 1.5.1.6 Revision 8218
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-20T15:52:06.030999Z'
exploitAvailable: true
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T15:52:14.652Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-113391'
references:
  - url: 'https://vuldb.com/vuln/422667'
    label: >-
      VDB-422667 | DrayTek Vigor2960 Upload Endpoint mainfunction.cgi
      uploadlangs command injection
  - url: 'https://vuldb.com/vuln/422667/cti'
    label: 'VDB-422667 | CTI Indicators (IOB, IOC, TTP, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-113391'
    label: CVE-2026-113391 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/992244'
    label: >-
      Submit #992244 | DrayTek Vigor2960 Vigor2960 1.5.1.6 (revision 8218)
      Upload Filename Command Injection Across Multiple Authenticated
  - url: >-
      https://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0008-authenticated-upload-filename-command-injection
  - url: >-
      https://fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.7/Vigor2960_v1.5.1.7.zip
tags:
  - cve.org
  - exploit-available
ingestedAt: '2026-10-20T13:07:11.082Z'
---

## Overview

A vulnerability has been found in DrayTek Vigor2960 1.5.1.6 Revision 8218. This affects the function uploadlangs of the file /cgi-bin/mainfunction.cgi of the component Upload Endpoint. Such manipulation leads to command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.1.7 is able to mitigate this issue. It is recommended 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.