Advantech WISE-DeviceOn Server <5.4 XSS via /rmm/v1/plugin-config/addins/menus
CVE-2025-34266 Published on December 5, 2025
Advantech WISE-DeviceOn Server < 5.4 Authenticated Stored XSS via plugin-config/addins/menus
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.
Vulnerability Analysis
CVE-2025-34266 is exploitable with network access. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2025-34266 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2025-34266
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Affected Versions
Advantech Co., Ltd. WISE-DeviceOn Server:- Before 5.4 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.