CVE-2026-113390 Details
Description
A flaw has been found in DrayTek Vigor2960 1.5.1.6 Revision 8218. Affected by this issue is the function sub_182B0 of the file /cgi-bin/mainfunction.cgi of the component CGI Interface. This manipulation of the argument usefile/usescript/option causes os command injection. Remote exploitation of the attack is possible. The exploit has been published and may be used. 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 CGI interface of firmware version 1.5.1.6 Revision 8218. The issue arises in the function 'sub_182B0' within the file '/cgi-bin/mainfunction.cgi', where user-controlled arguments are directly inserted into command templates without proper sanitization. This flaw allows authenticated attackers to execute arbitrary commands on the device with root privileges. The vulnerability can be exploited remotely, and proof-of-concept exploits have been published.
Users are advised to update to DrayTek Vigor2960 firmware version 1.5.1.7, which addresses this vulnerability. However, note that the Vigor2960 is at the end of life with limited support, and only major issues are being reviewed.
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 22, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0007-authenticated-jsonstatus-usefile-file-clobber | [email protected] | ExploitTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-113390 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/992224 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/422666 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/422666/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| DrayTek Vigor2960 | 1.5.1.6 <= R8218 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 22, 2026 | CVE Modified | CISA-ADP |
| Oct 20, 2026 | New CVE Received | [email protected] |