How to fix 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.

Is Ac18 Firmware 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. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Proof-of-concept code is publicly available.

CVE-2025-63834

MEDIUM

2025-11-10 [email protected]

5.4

CVSS 3.1

CVSS Vector

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

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.

Analysis

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 Context

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.

Affected Products

Tenda Ac18 Firmware.

Remediation

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.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.1

CVSS: +27

POC: +20

CVE-2025-63834 vulnerability details – vuln.today

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CVE-2025-63834

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CVE-2025-63834

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Lifecycle Timeline

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Description

Analysis

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