CVE-2025-5855 Tenda AC6 SetRebootTimer formSetRebootTimer stack-based overflow
A remote attacker can trigger a stack-based buffer overflow in the Tenda AC6 router's reboot timer function, potentially leading to code execution or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-5855?
CVE-2025-5855 is a high-severity memory corruption vulnerability in Tenda Ac6 Firmware, published on 9 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability, which was classified as critical, was found in Tenda AC6 15.03.05.16. This affects the function formSetRebootTimer of the file /goform/SetRebootTimer. The manipulation of the argument rebootTime leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-5855?
It affects 1 product.
Products include Tenda Ac6 Firmware.
How do I fix CVE-2025-5855?
No fix has been published for CVE-2025-5855 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-5855 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5855 exists.
Other vulnerabilities in Tenda Ac6 Firmware
Sources
Also known as GHSA-v57j-pmmv-88c8.