CVE-2025-34237
MEDIUMAdvantech WebAccess/VPN < 1.1.5 - Stored Cross-Site Scripting via StandaloneVpnClientsController
Title source: llmDescription
Advantech WebAccess/VPN versions prior to 1.1.5 contain a stored cross-site scripting (XSS) vulnerability via StandaloneVpnClientsController.addStandaloneVpnClientAction(). Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.
References (3)
Core 3
Core References
Release Notes vendor-advisory
patch
https://icr.advantech.com/support/router-models/download/511/sa-2025-01-vpn-portal-2025-11-06.pdf
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/advantech-webaccess-vpn-stored-xss-via-standalonevpnclientscontroller
Product product
https://icr.advantech.com/download/software
Scores
CVSS v3
5.4
EPSS
0.0002
EPSS Percentile
6.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
advantech/webaccess\/vpn
< 1.1.5
Published
Nov 06, 2025
Tracked Since
Feb 18, 2026