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CVE-2026-113393— DrayTek Vigor2960 commonupload mainfunction.cgi unrestricted upload

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）中发现一处漏洞。该问题影响组件 commonupload 中对文件 /cgi-bin/mainfunction.cgi 的某些未知处理逻辑。攻击者可通过操纵 upload_path 或 upload_name 参数，实现无限制文件上传。此攻击可从远程发起。利用方法已公开披露，可能被恶意利用。升级至版本 1.5.1.7 可修复此问题，建议尽快升级受影响组件。厂商说明如下："Vigor2960 1.5.1.7 已修复多项安全问题。此外，

CVSS 6.3 · Medium
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I. Basic Information for CVE-2026-113393

Vulnerability Information
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Vulnerability Title
DrayTek Vigor2960 commonupload mainfunction.cgi unrestricted upload
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
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-2026-113393

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III. Intelligence Information for CVE-2026-113393

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Proof of Concept for CVE-2026-113393 (1)

Other References for CVE-2026-113393 (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-2026-113391 9.9 CRITICAL DrayTek Vigor2960 Upload Endpoint mainfunction.cgi uploadlangs 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

IV. Related Vulnerabilities

Same product: Vigor2960
Same vendor: DrayTek
Same weakness: CWE-434

V. Comments for CVE-2026-113393

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