CVE-2025-30256 Denial of service in AC6 V5.0
An attacker can cause a Tenda AC6 router to reboot by sending specially crafted HTTP requests, resulting in a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-30256?
CVE-2025-30256 is a high-severity denial of service vulnerability in Tenda Ac6 Firmware, published on 20 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A denial of service vulnerability exists in the HTTP Header Parsing functionality of Tenda AC6 V5.0 V02.03.01.110. A specially crafted series of HTTP requests can lead to a reboot. An attacker can send multiple network packets to trigger this vulnerability.
Weakness: CWE-772
Which versions are affected by CVE-2025-30256?
It affects 1 product.
Products include Tenda Ac6 Firmware.
How do I fix CVE-2025-30256?
No fix has been published for CVE-2025-30256 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-30256 being exploited?
There is no known exploitation of CVE-2025-30256 in the wild and no public exploit code.
Other vulnerabilities in Tenda Ac6 Firmware
Sources
Also known as GHSA-mxm9-vq8j-x8j2.