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CVE-2026-113391— DrayTek Vigor2960 Upload Endpoint mainfunction.cgi uploadlangs command injection

Quick assessment

Affected
DrayTek Vigor2960
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 DrayTek Vigor2960 固件版本 1.5.1.6（修订版 8218）中发现一处安全漏洞。该漏洞影响组件"Upload Endpoint"中文件 的 功能。攻击者可通过恶意构造请求，利用该功能实现命令注入。此攻击可远程执行，且相关利用方式已向公众披露，可能被恶意利用。 将固件升级至版本 1.5.1.7 可缓解此问题，建议立即升级受影响的组件。厂商说明如下："Vigor2960 版本 1.5.1.7 已修复多项安全问题。同时，Vigor2960 产品已进入生命周期结束（EoS）阶段，仅提供有限支持，仅针

CVSS 9.9 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-113391

Vulnerability Information
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Vulnerability Title
DrayTek Vigor2960 Upload Endpoint mainfunction.cgi uploadlangs command injection
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
DrayTek Vigor2960 1.5.1.6 Revision 8218 cpe:2.3:o:draytek:vigor2960_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-113391

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III. Intelligence Information for CVE-2026-113391

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Vendor Advisories for CVE-2026-113391 (1)

Other References for CVE-2026-113391 (5)

Same Patch Batch · DrayTek · 2026-10-20 · 9 CVEs total

CVE-2026-113389 9.9 CRITICAL DrayTek Vigor2960 CGI Process mainfunction.cgi set_table command injection
CVE-2026-113390 9.9 CRITICAL DrayTek Vigor2960 CGI mainfunction.cgi sub_182B0 os command injection
CVE-2026-113392 7.4 HIGH DrayTek Vigor2960 Apmupload mainfunction.cgi path traversal
CVE-2026-113394 7.4 HIGH DrayTek Vigor2960 mainfunction.cgi setSWMProfile path traversal
CVE-2026-113395 7.4 HIGH DrayTek Vigor2960 swmconfigupload mainfunction.cgi cgiEscape path traversal
CVE-2026-113396 7.4 HIGH DrayTek Vigor2960 Rename Table mainfunction.cgi rename_table command injection
CVE-2026-113397 7.4 HIGH DrayTek Vigor2960 IPsec mainfunction.cgi ruequest_certificate command injection
CVE-2026-113393 6.3 MEDIUM DrayTek Vigor2960 commonupload mainfunction.cgi unrestricted upload

IV. Related Vulnerabilities

Same product: Vigor2960
Same vendor: DrayTek
Same weakness: CWE-77

V. Comments for CVE-2026-113391

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