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CVE-2025-34258VulnerabilityPublished Updated

CVE-2025-34258: Advantech WISE-DeviceOn Server · XSS or 'Cross-site Scripting'

Affects Advantech WISE-DeviceOn ServerSource CVE Database V5

0

Not known to be exploited · CVSS 5.1 Medium : upgrade to 5.4 when convenient.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.4
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Dec 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Upgrade Advantech WISE-DeviceOn Server to 5.4.

Affected software

ProductAffectedFixed in
Advantech Co., Ltd. WISE-DeviceOn ServerAffected
  • =0
  • <5.4
Fixed in
  • 5.4

AI-suggested

If you cannot patch yet, restrict authenticated user permissions to trusted users only and avoid interacting with untrusted map entries.

Description

Advantech WISE-DeviceOn Server versions prior to 5.4 contain a stored cross-site scripting (XSS) vulnerability in the /rmm/v1/devicemap/plan endpoint. When an authenticated user adds an area to a map entry, the name parameter is stored and later rendered in the map list without HTML sanitization. An attacker can inject malicious script into the area name, which is then executed in the browser context of users who view or interact with the affected map entry, potentially enabling session compromise and unauthorized actions as the victim.

References

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