CVE-2025-34257: Advantech WISE-DeviceOn Server < 5.4 Authenticated Stored XSS via action/defined
Advantech Co., Ltd. · WISE-DeviceOn Server
Vendor fix available · Affected: Advantech Co., Ltd. WISE-DeviceOn Server · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 20% of scored CVEs
DescriptionCVE.org
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 products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Advantech Co., Ltd. · WISE-DeviceOn Serverbefore 5.4
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- Cross-site Scripting
- Vendor
- Advantech Co., Ltd.
- Published
- December 2025
CoverageNo articles yet
No CyberSIXT article names CVE-2025-34257 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.