CVE-2026-113395: DrayTek Vigor2960 swmconfigupload mainfunction.cgi cgiEscape path traversal
A security flaw has been discovered in DrayTek Vigor2960 1.5.1.6 Revision 8218. The affected element is the function cgiEscape of the file /cgi-bin/mainfunction.cgi of the component swmconfigupload. The manipulation of the argument multipart results in path traversal. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.5.1.7 is sufficient to fix this issue. The affected component should be upgraded. 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
DrayTek Vigor2960to a version that resolves this vulnerability.Fixed in 1.5.1.7
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker can launch the attack remotely, but the CVSS vector indicates that low-level privileges are required. No user interaction is needed.
Which systems are affected and what version fixes it?
DrayTek Vigor2960 devices running version 1.5.1.6 Revision 8218 are affected. Upgrading to version 1.5.1.7 is sufficient to fix the issue.
Is exploit activity a practical concern?
Yes. A public exploit has been released and may be used in attacks.
Are affected devices still fully supported?
No. The vulnerability affects products that are no longer supported by the maintainer; the vendor states that the Vigor2960 is end-of-support and receives only limited review for major issues.