CVE-2025-34261

CVE-2025-34261 is a medium-severity vulnerability in Advantech Wise-deviceon Server with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Description

Advantech WISE-DeviceOn Server versions prior to 5.4 contain a stored cross-site scripting (XSS) vulnerability in the /rmm/v1/devicegroups/ endpoint. When an authenticated user creates a device group, the name and description values are stored and later rendered in device group listings 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 device group, potentially enabling session compromise and unauthorized actions as the victim.

Frequently asked questions

What is CVE-2025-34261?
Advantech WISE-DeviceOn Server versions prior to 5.4 contain a stored cross-site scripting (XSS) vulnerability in the /rmm/v1/devicegroups/ endpoint. When an authenticated user creates a device group, the name and description values are stored and later rendered in device group listings 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 device group, potentially enabling session compromise and unauthorized actions as the victim.
How severe is CVE-2025-34261?
CVE-2025-34261 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-34261 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-34261?
CVE-2025-34261 affects Advantech Wise-deviceon Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-34261?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-34261 have an EU (EUVD) identifier?
Yes. CVE-2025-34261 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201437.
When was CVE-2025-34261 published?
CVE-2025-34261 was published on 2025-12-05 and last updated on 2026-06-17.

References

Affected products (1)

More vulnerabilities in Advantech Wise-deviceon Server

All CVEs affecting Advantech Wise-deviceon Server →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →