How severe is CVE-2025-63834?

CVE-2025-63834 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-2025-63834 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63834?

CVE-2025-63834 affects Tenda Ac18 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63834?

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

Does CVE-2025-63834 have an EU (EUVD) identifier?

Yes. CVE-2025-63834 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-48944.

When was CVE-2025-63834 published?

CVE-2025-63834 was published on 2025-11-10 and last updated on 2026-06-17.

CVE-2025-63834

CVE-2025-63834 is a medium-severity vulnerability in Tenda Ac18 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)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-48944
Weakness: CWE-79
Affected product: Tenda Ac18 Firmware
Published: 2025-11-10
Last modified: 2026-06-17

Description

A stored cross-site scripting (XSS) vulnerability was discovered in Tenda AC18 v15.03.05.05_multi. The vulnerability exists in the ssid parameter of the wireless settings. Remote attackers can inject malicious payloads that execute when any user visits the router's homepage.

Frequently asked questions

What is CVE-2025-63834?: A stored cross-site scripting (XSS) vulnerability was discovered in Tenda AC18 v15.03.05.05_multi. The vulnerability exists in the ssid parameter of the wireless settings. Remote attackers can inject malicious payloads that execute when any user visits the router's homepage.
How severe is CVE-2025-63834?: CVE-2025-63834 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-2025-63834 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63834?: CVE-2025-63834 affects Tenda Ac18 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63834?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-63834 have an EU (EUVD) identifier?: Yes. CVE-2025-63834 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-48944.
When was CVE-2025-63834 published?: CVE-2025-63834 was published on 2025-11-10 and last updated on 2026-06-17.

References

https://github.com/babraink/cve_report/blob/main/cve_report/tenda/tendaAC18/wifiset_ssid_xss/README.md

Affected products (1)

cpe:2.3:o:tenda:ac18_firmware:15.03.05.05:*:*:*:*:*:*:*

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