Vulnerability · Published Dec 5, 2025 · Assigned by VulnCheck
CVE-2025-34257Advantech WISE-DeviceOn Server < 5.4 Authenticated Stored XSS via action/defined
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 0.3% (higher than 20% 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/action/defined endpoint. When an authenticated user creates a task, the defined_name value is stored and later rendered in the Overview page without HTML sanitization. An attacker can inject malicious script into defined_name, which is then executed in the browser context of users who view the affected task, 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-action-defined third-party-advisory