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CVE-2026-129453

DrayTek Vigor2960 File Existence Check mainfunction.cgi check_file_exist heap-based overflow

  • Critical 9.9
  • A public exploit reference is listed

Description

A vulnerability was found in DrayTek Vigor2960 1.5.1.6. This issue affects the function check_file_exist of the file /cgi-bin/mainfunction.cgi of the component File Existence Check. Performing a manipulation of the argument upload_name results in heap-based buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. Upgrading to version 1.5.1.7 is capable of addressing this issue. Upgrading the affected component is recommended. The vendor recommends: "1.5.1.6 isn't the latest version of 2960, the latest version fixes many security issues. And we have another one in our release plan which should solve the issues reported."

Key facts

Published
15 Nov 2026
Last changed
15 Nov 2026
Assigned by
VulDB

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 9.4CVSS 4.0, Criticalfrom the CNA (VulDB)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
  • 9.9CVSS 3.1, Criticalfrom the CNA (VulDB)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
  • 9.9CVSS 3.0, Criticalfrom the CNA (VulDB)CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
  • 9.0CVSS 2.0, Highfrom the CNA (VulDB)AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:OF/RC:C

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
DrayTekVigor2960
  • 1.5.1.6 (affected)
  • 1.5.1.7 (unaffected)

Timeline

  1. 14 Nov 2026 Advisory disclosed
  2. 14 Nov 2026 VulDB entry created
  3. 14 Nov 2026 VulDB entry last update
  4. 15 Nov 2026 Published

Weakness

References