CVE-2026-113394 DrayTek CVE debrief

Who should care

System administrators and security teams responsible for DrayTek Vigor2960 devices should assess their exposure and apply remediation measures. This vulnerability is particularly relevant for organizations using the affected version of the device, as it could lead to unauthorized access or modification of sensitive files.

Why it matters

CVE-2026-113394 is a path traversal vulnerability in DrayTek Vigor2960 devices running firmware version 1.5.1.6 Revision 8218. The vulnerability allows remote attackers to manipulate file paths, potentially leading to unauthorized file access or modification. The exploit is publicly available, and the product is End-of-Sale with limited support. System administrators and security teams should assess exposure and apply remediation measures.

• Potential unauthorized file access or modification on affected devices
• Publicly available exploit increases the risk of exploitation
• End-of-Sale product with limited vendor support
• Need for verification of exposure and application of remediation

Technical summary

The DrayTek Vigor2960 device, running firmware version 1.5.1.6 Revision 8218, is vulnerable to a path traversal attack through the setSWMProfile function in the mainfunction.cgi file. This vulnerability allows remote attackers to manipulate file paths, potentially leading to unauthorized access or modification of files on the device. The exploit for this vulnerability is publicly available, increasing the risk of exploitation.

Defensive priority

Medium priority should be given to assessing exposure and applying remediation, as the vulnerability is publicly exploitable and has a publicly available exploit.

Recommended defensive actions

• Assess exposure of DrayTek Vigor2960 devices running version 1.5.1.6 Revision 8218
• Verify if publicly available exploits are being used against vulnerable devices
• Apply the vendor-recommended remediation by upgrading to version 1.5.1.7 or later
• Monitor for any unauthorized access or modifications to files on affected devices
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details about the vulnerability, its impact, and the affected product version. The vendor has provided information about the corrected version and the product's End-of-Sale status.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.