CVE-2026-113397 Details
Description
A security vulnerability has been detected in DrayTek Vigor2960 1.5.1.6 Revision 8218. This affects the function ruequest_certificate of the file /cgi-bin/mainfunction.cgi of the component IPsec Handler. Such manipulation of the argument option leads to command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 1.5.1.7 mitigates this issue. Upgrading the affected component is recommended. 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 IPsec Handler component, within the firmware version 1.5.1.6 Revision 8218. The vulnerability arises in the 'ruequest_certificate' function of the '/cgi-bin/mainfunction.cgi' file. An authenticated attacker can exploit this issue by manipulating the 'option' parameter, leading to arbitrary command execution on the device. The injected commands are executed with the privileges of 'mainfunction.cgi', and the exploitation can result in an interactive reverse shell being established from the device to the attacker's host.
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 restrict certificate operation types to a fixed enumeration and use server-generated temporary paths for certificate files, removing them safely after import.
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/DRV2960-0014-authenticated-request-certificate-command-injection | [email protected] | ExploitTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-113397 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/992250 | [email protected] | Permission Required |
| https://vuldb.com/vuln/422673 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/422673/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] |