CVE-2025-34238

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://icr.advantech.com/download/software	Product
https://icr.advantech.com/support/router-models/download/511/sa-2025-01-vpn-portal-2025-11-06.pdf	Release Notes
https://www.vulncheck.com/advisories/advantech-webaccess-vpn-path-traversal-via-ajaxstandalonevpnclientscontroller	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:advantech:webaccess\/vpn:*:*:*:*:*:*:*:*

History

04 Dec 2025, 21:26

Type	Values Removed	Values Added
References	~~() https://icr.advantech.com/download/software -~~	() https://icr.advantech.com/download/software - Product
References	~~() https://icr.advantech.com/support/router-models/download/511/sa-2025-01-vpn-portal-2025-11-06.pdf -~~	() https://icr.advantech.com/support/router-models/download/511/sa-2025-01-vpn-portal-2025-11-06.pdf - Release Notes
References	~~() https://www.vulncheck.com/advisories/advantech-webaccess-vpn-path-traversal-via-ajaxstandalonevpnclientscontroller -~~	() https://www.vulncheck.com/advisories/advantech-webaccess-vpn-path-traversal-via-ajaxstandalonevpnclientscontroller - Third Party Advisory
CPE		cpe:2.3:a:advantech:webaccess\/vpn::::::::
First Time		Advantech webaccess\/vpn Advantech
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.5

06 Nov 2025, 20:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-11-06 20:15

Updated : 2025-12-04 21:26

NVD link : CVE-2025-34238

Mitre link : CVE-2025-34238

CVE.ORG link : CVE-2025-34238

JSON object : View

Products Affected

advantech

webaccess\/vpn

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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