---
id: CVE-2025-34238
title: "Advantech WebAccess/VPN versions prior to 1.1.5 contain an absolute path traversal via\_AjaxStandaloneVpnClientsController.ajaxDownloadRoadWarriorConfigFileAction() that allows an authenticated network administrator to cause the applicati…"
summary: "Advantech WebAccess/VPN versions prior to 1.1.5 contain an absolute path traversal via\_AjaxStandaloneVpnClientsController.ajaxDownloadRoadWarriorConfigFileAction() that allows an authenticated network administrator to cause the applicati…"
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-22
vendor: advantech
product: webaccess/vpn
affected:
  - webaccess/vpn < 1.1.5
patched:
  - webaccess/vpn 1.1.5
published: '2025-11-06'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T21:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-34238'
references:
  - url: 'https://icr.advantech.com/download/software'
    label: disclosure@vulncheck.com
  - url: >-
      https://icr.advantech.com/support/router-models/download/511/sa-2025-01-vpn-portal-2025-11-06.pdf
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/advantech-webaccess-vpn-path-traversal-via-ajaxstandalonevpnclientscontroller
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00409
epssPercentile: 0.33035
ingestedAt: '2026-10-07T21:54:14.966Z'
---

## Overview

Advantech WebAccess/VPN versions prior to 1.1.5 contain an absolute path traversal via AjaxStandaloneVpnClientsController.ajaxDownloadRoadWarriorConfigFileAction() that allows an authenticated network administrator to cause the application to read and return the contents of arbitrary files the web user (www-data) can access.

## Affected

- `webaccess/vpn < 1.1.5`

## Remediation

Upgrade past the affected range:

- `webaccess/vpn 1.1.5`