Advantech WebAccess/VPN < 1.1.5 SQL Injection via AjaxNetworkController

Advisories

severity: high
date: November 6, 2025
Affecting: WebAccess/VPN < 1.1.5
CVE: CVE-2025-34242
CWE: CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVSS: 8.6
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References: Advantech Advisory
Credit: Alex Williams from Pellera Technologies
Description: Advantech WebAccess/VPN versions prior to 1.1.5 contain a SQL injection vulnerability in AjaxNetworkController.ajaxAction() that allows an authenticated low-privileged observer user to inject SQL via datatable search parameters, leading to disclosure of database information.