CVE-2025-34261: Advantech WISE-DeviceOn Server versions prior to 5.4 contain a stored cross-site scripting (XSS) vulnerability

Q: How do I fix CVE-2025-34261?

wise-deviceon server: upgrade to 5.4. Exact commands for each OS are on this page.

Q: Is CVE-2025-34261 being exploited?

CVE-2025-34261 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-34261 affect?

CVE-2025-34261 affects wise-deviceon server. Severity is medium (CVSS 5.4). 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 sto

Q: How urgent is CVE-2025-34261?

Priority 23/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2025-34261 is a medium-severity flaw (CVSS 5.4) affecting wise-deviceon server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 inte

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-12-05
Last modified	2026-10-18

Publisher (CNA): VulnCheck · Vendor: advantech

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-05 18:15 UTCPublished CVE record published
2026-10-18 14:10 UTCUpdated Record last modified

advantech wise-deviceon server UPGRADE

Affected: < 5.4

Fixed in: 5.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wise-deviceon-server || rpm -q wise-deviceon-server || wise-deviceon-server --version

2. UPGRADE to 5.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wise-deviceon-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wise-deviceon-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-34261?

wise-deviceon server: upgrade to 5.4. Exact commands for each OS are on this page.

Is CVE-2025-34261 being exploited?

CVE-2025-34261 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-34261 affect?

CVE-2025-34261 affects wise-deviceon server. Severity is medium (CVSS 5.4). 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 sto

How urgent is CVE-2025-34261?

Priority 23/100. No elevated risk signals yet.

Software pages

Advantech vulnerabilities

Related CVEs

CVE-2025-34259 MEDIUM 5.4 UPGRADE Advantech WISE-DeviceOn Server versions prior to 5.4 contain a stored cross-site scripting (XSS) vulnerability
CVE-2025-34260 MEDIUM 5.4 UPGRADE Advantech WISE-DeviceOn Server versions prior to 5.4 contain a stored cross-site scripting (XSS) vulnerability
CVE-2025-34258 MEDIUM 5.4 UPGRADE Advantech WISE-DeviceOn Server versions prior to 5.4 contain a stored cross-site scripting (XSS) vulnerability
CVE-2025-34262 MEDIUM 5.4 UPGRADE Advantech WISE-DeviceOn Server versions prior to 5.4 contain a stored cross-site scripting (XSS) vulnerability
CVE-2025-34263 MEDIUM 5.4 UPGRADE Advantech WISE-DeviceOn Server versions prior to 5.4 contain a stored cross-site scripting (XSS) vulnerability

References

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