Vulnerability · Published Dec 5, 2025 · Assigned by VulnCheck
CVE-2025-34266Advantech WISE-DeviceOn Server < 5.4 Authenticated Stored XSS via plugin-config/addins/menus
Medium 5.1
In plain English
A medium-severity cross-site scripting in WISE-DeviceOn Server from Advantech Co., Ltd.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Official description
Advantech WISE-DeviceOn Server versions prior to 5.4 contain a stored cross-site scripting (XSS) vulnerability in the /rmm/v1/plugin-config/addins/menus endpoint. When an authenticated user adds or edits an AddIns menu entry, the label and path values are stored in plugin configuration data and later rendered in the AddIns UI without proper HTML sanitation. An attacker can inject malicious script into either field, which is then executed in the browser context of users who view or interact with the affected AddIns entry, potentially enabling session compromise and unauthorized actions as the victim.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Advantech Co., Ltd. | WISE-DeviceOn Server | 0 – before 5.4 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
References
- https://advcloudfiles.advantech.com/cms/2ca1b071-fd78-4d7f-8a2a-7b4537a95d19/Security%20Advisory%20PDF%20File/SECURITY-ADVISORY----DeviceOn-20251208-2.pdf vendor-advisory, patch
- https://docs.deviceon.advantech.com/docs/resource/ product
- https://www.vulncheck.com/advisories/advantech-wise-deviceon-server-authenticated-stored-xss-via-pluginconfig-addins-menus third-party-advisory