CVE-2025-34246

Advantech WebAccess/VPN < 1.1.5 SQL Injection via AjaxPrevalidationController.ajaxAction()

State: Published
Severity: 5.3 Medium
Published: Nov 6, 2025
Updated: Nov 17, 2025
Reserved: Apr 15, 2025

Description

Advantech WebAccess/VPN versions prior to 1.1.5 contain a SQL injection vulnerability in AjaxPrevalidationController.ajaxAction() that allows an authenticated low-privileged observer user to inject SQL via datatable search parameters, leading to disclosure of database information.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	VulnCheck

Weaknesses

CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Affected Products

Product	Versions
WebAccess/VPNAdvantech	before 1.1.5Affected

References

https://icr.advantech.com/support/router-models/download/511/sa-2025-01-vpn-portal-2025-11-06.pdfvendor-advisorypatch
https://www.vulncheck.com/advisories/advantech-webaccess-vpn-sqli-via-ajaxprevalidationcontrollerthird-party-advisory
https://icr.advantech.com/download/softwareproduct

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