What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-20 · updated 2026-10-20
• Weakness: CWE-74

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.

Affected products

• DrayTek Vigor2960: 1.5.1.6 Revision 8218

References

• https://fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.7/Vigor2960_v1.5.1.7.zip
• https://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0008-authenticated-upload-filename-command-injection
• https://vuldb.com/cve/CVE-2026-113391
• https://vuldb.com/submit/992244
• https://vuldb.com/vuln/422667
• https://vuldb.com/vuln/422667/cti

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