What is the CVSS score of CVE-2025-63834?

CVE-2025-63834 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of Ac18 Firmware are affected by CVE-2025-63834?

Organizations using Tenda AC18 should be aware of moderate risk from CVE-2025-63834, a cross-site scripting vulnerability rated CVSS 5.4.

Is there a public PoC exploit available for CVE-2025-63834?

Yes, a public proof-of-concept exploit is available for CVE-2025-63834. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-63834?

Within 30 days: Identify affected systems running Tenda AC18 and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Ac18 Firmware CVE-2025-63834

MEDIUM

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

2025-11-10 cve@mitre.org

Tenda XSS Ac18 Firmware

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:21 vuln.today

PoC Detected

Dec 01, 2025 - 20:15 vuln.today

Public exploit code

CVE Published

Nov 10, 2025 - 17:15 nvd

MEDIUM 5.4

DescriptionCVE.org

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.

AnalysisAI

A stored cross-site scripting (XSS) vulnerability was discovered in Tenda AC18 v15.03.05.05_multi. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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. Affected products include: Tenda Ac18 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.