CVE-2026-113391 Details
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.
A command injection vulnerability has been identified in the DrayTek Vigor2960 router, specifically in the firmware version 1.5.1.6 Revision 8218. The issue arises in the uploadlangs function within the mainfunction.cgi file, part of the Upload Endpoint component. This vulnerability allows for arbitrary command execution on the device, and can be exploited remotely by authenticated users. The flaw has been publicly disclosed and is actively exploitable. DrayTek has released a patch in version 1.5.1.7, which addresses this vulnerability.
Users are advised to upgrade to DrayTek Vigor2960 firmware version 1.5.1.7, which addresses this vulnerability. For those unable to upgrade, it is recommended to avoid using the affected upload endpoints.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 20, 2026CISA-ADP
Assessed Oct 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.7/Vigor2960_v1.5.1.7.zip | [email protected] | Broken LinkVendor |
| https://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0008-authenticated-upload-filename-command-injection | [email protected] | BundleExploitTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-113391 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/992244 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/422667 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/422667/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | [email protected] |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| DrayTek Vigor2960 | 1.5.1.6 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 20, 2026 | CVE Modified | CISA-ADP |
| Oct 20, 2026 | New CVE Received | [email protected] |