Stored Cross-Site Scripting Vulnerability in Advantech WISE-DeviceOn Server
CVE-2025-34266

5.1MEDIUM

Key Information:

Vendor

Advantech Co., Ltd.

Status
Wise-deviceon Server
Vendor
CVE Published:
5 December 2025

What is CVE-2025-34266?

The Advantech WISE-DeviceOn Server before version 5.4 has a stored cross-site scripting (XSS) vulnerability that affects the /rmm/v1/plugin-config/addins/menus endpoint. This flaw allows an authenticated user to inject malicious scripts into the AddIns menu configuration. As these values are stored and rendered without proper HTML sanitization, an attacker can execute scripts in the context of the user's browser, leading to potential session compromise and unauthorized actions. It is crucial for users to upgrade to the latest version to mitigate this security risk.

Affected Version(s)

WISE-DeviceOn Server 0 < 5.4

References

https://advcloudfiles.advantech.com/cms/2ca1b071-fd78-4d7...
vendor-advisorypatch
https://docs.deviceon.advantech.com/docs/resource/
product
https://www.vulncheck.com/advisories/advantech-wise-devic...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Alex Williams from Pellera Technologies
JSON
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CVE-2025-34266 : Stored Cross-Site Scripting Vulnerability in Advantech WISE-DeviceOn Server