CVE-2025-63834 Cross-site scripting in n/a
Remote attackers can inject malicious scripts into the router's wireless settings, leading to code execution or account takeover when users visit the homepage.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-63834?
CVE-2025-63834 is a medium-severity cross-site scripting vulnerability in Tenda Ac18 Firmware, published on 10 Nov 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2025-63834?
It affects 1 product.
Products include Tenda Ac18 Firmware.
How do I fix CVE-2025-63834?
No fix has been published for CVE-2025-63834 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-63834 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63834 exists.
Other vulnerabilities in Tenda Ac18 Firmware
Sources
Also known as GHSA-3vc8-hhvv-jw47.