CVE-2025-34236

low-risk
Published 2025-11-06

Advantech WebAccess/VPN versions prior to 1.1.5 contain a stored cross-site scripting (XSS) vulnerability via NetworksController.addNetworkAction(). 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.

Do I need to act?

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0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.4/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Webaccess\/Vpn

Affected Vendors

Advantech

References (3)

Product https://icr.advantech.com/download/software
Release Notes https://icr.advantech.com/support/router-models/download/511/sa-2025-01-vpn-port...
Third Party Advisory https://www.vulncheck.com/advisories/advantech-webaccess-vpn-stored-xss-via-netw...
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal