BaseFortify

Publication date: 2025-11-06

Last updated on: 2025-12-04

Assigner: VulnCheck

Description

Advantech WebAccess/VPN versions prior to 1.1.5 contain a command injection vulnerability in AppManagementController.appUpgradeAction() that allows an authenticated system administrator to execute arbitrary commands as the web server user (www-data) by supplying a crafted uploaded filename.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-11-06

Last Modified

2025-12-04

Generated

2026-07-06

AI Q&A

2025-11-06

EPSS Evaluated

2026-07-05

NVD

CVE-2025-34239

Affected Vendors & Products

Vendor	Product	Version / Range
advantech	webaccess\/vpn	to 1.1.5 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-78	The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

Executive Summary

This vulnerability is a command injection flaw in Advantech WebAccess/VPN versions prior to 1.1.5. It occurs in the AppManagementController.appUpgradeAction() function, where an authenticated system administrator can execute arbitrary commands on the web server by providing a specially crafted uploaded filename. The commands run with the privileges of the web server user (www-data).

Impact Analysis

An attacker who is an authenticated system administrator can exploit this vulnerability to execute arbitrary commands on the server hosting the web application. This can lead to unauthorized control over the server, potential data compromise, service disruption, or further attacks within the network.

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