CVE-2026-113392 Details
Description
A vulnerability was found in DrayTek Vigor2960 1.5.1.6 Revision 8218. This vulnerability affects unknown code of the file /cgi-bin/mainfunction.cgi of the component Apmupload. Performing a manipulation of the argument action results in path traversal. The attack is possible to be carried out remotely. The exploit has been made public and could be used. Upgrading to version 1.5.1.7 is able to resolve this issue. Upgrading the affected component is advised. 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 path traversal vulnerability has been identified in the DrayTek Vigor2960 router, specifically in version 1.5.1.6 Revision 8218. The issue resides within the Apmupload component, particularly in the '/cgi-bin/mainfunction.cgi' file. The vulnerability allows authenticated attackers to manipulate the 'action' argument, leading to unauthorized file writes outside the intended directory. This exploitation can be performed remotely, and a proof-of-concept is available.
Users are advised to upgrade to DrayTek Vigor2960 version 1.5.1.7, which addresses this vulnerability. For those unable to upgrade, it is recommended to avoid using the APM upload 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/DRV2960-0009-authenticated-apmupload-path-traversal-clobber | [email protected] | ExploitTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-113392 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/992245 | [email protected] | Permission Required |
| https://vuldb.com/vuln/422668 | [email protected] | AdvisoryContent Wall |
| https://vuldb.com/vuln/422668/cti | [email protected] | AdvisoryContent Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| DrayTek Vigor2960 | 1.5.1.6 R8218 |
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] |