RCE in Draytek Vigor2960
CVE-2026-113391
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Draytek Vigor2960 — versions 1.5.1.6 Revision 8218
Weakness classification (CWE)
References
- vuldb.com/vuln/422667 (technical-description, vdb-entry)
- vuldb.com/vuln/422667/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-113391 (third-party-advisory)
- vuldb.com/submit/992244 (third-party-advisory)
- github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV… (exploit)
- fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.7/Vigor2960_v1.5.1.7.zip (patch)
Frequently asked questions
- What is CVE-2026-113391?
- CVE-2026-113391 is a critical-severity vulnerability in Draytek Vigor2960, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.9/10. Published 2026-10-20.
- How severe is CVE-2026-113391?
- Critical severity. CVSS v3 base score is 9.9 out of 10.