CVE-2026-113393 Details
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.
A vulnerability in the DrayTek Vigor2960 router, specifically in the firmware version 1.5.1.6 Revision 8218, allows for unrestricted file uploads via the 'commonupload' component. This issue arises from the '/cgi-bin/mainfunction.cgi' file, where the 'upload_path' and 'upload_name' arguments are not properly validated, enabling authenticated attackers to upload files to arbitrary locations on the device. The vulnerability also permits command injection, as the 'upload_path' parameter can be manipulated to execute commands with root privileges.
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 'commonupload' feature.
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/DRV2960-0010-authenticated-commonupload-arbitrary-file-clobber | [email protected] | ExploitTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-113393 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/992246 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/422669 | [email protected] | Content Wall |
| https://vuldb.com/vuln/422669/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
| CWE-434 | Unrestricted Upload of File with Dangerous Type | [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 | New CVE Received | [email protected] |
| Oct 20, 2026 | CVE Modified | CISA-ADP |