How severe is CVE-2025-25427?

CVE-2025-25427 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-2025-25427 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-25427?

CVE-2025-25427 affects Tp-link Wr841n Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-25427?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-25427 have an EU (EUVD) identifier?

Yes. CVE-2025-25427 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11808.

When was CVE-2025-25427 published?

CVE-2025-25427 was published on 2025-04-18 and last updated on 2026-06-17.

CVE-2025-25427

CVE-2025-25427 is a medium-severity vulnerability in Tp-link Wr841n Firmware 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

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 8.6
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-11808
Weakness: CWE-79
Affected product: Tp-link Wr841n Firmware
Published: 2025-04-18
Last modified: 2026-06-17

Description

A stored cross-site scripting (XSS) vulnerability in the upnp.htm page of the web Interface in TP-Link WR841N v14/v14.6/v14.8 <= Build 241230 Rel. 50788n allows remote attackers to inject arbitrary JavaScript code via the port mapping description. This leads to an execution of the JavaScript payload when the upnp page is loaded.

Frequently asked questions

What is CVE-2025-25427?: A stored cross-site scripting (XSS) vulnerability in the upnp.htm page of the web Interface in TP-Link WR841N v14/v14.6/v14.8 <= Build 241230 Rel. 50788n allows remote attackers to inject arbitrary JavaScript code via the port mapping description. This leads to an execution of the JavaScript payload when the upnp page is loaded.
How severe is CVE-2025-25427?: CVE-2025-25427 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-2025-25427 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-25427?: CVE-2025-25427 affects Tp-link Wr841n Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-25427?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-25427 have an EU (EUVD) identifier?: Yes. CVE-2025-25427 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11808.
When was CVE-2025-25427 published?: CVE-2025-25427 was published on 2025-04-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tp-link:wr841n_firmware:*:*:*:*:*:*:*:*

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