CVE-2025-5847 Tenda AC9 HTTP POST Request SetRemoteWebCfg formSetSafeWanWebMan stack-based overflow
A remote attacker can trigger a stack-based buffer overflow in the Tenda AC9 router's web interface, potentially leading to arbitrary code execution.
- 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-2025-5847?
CVE-2025-5847 is a high-severity memory corruption vulnerability in Tenda Ac9 Firmware, published on 8 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in Tenda AC9 15.03.02.13 and classified as critical. Affected by this vulnerability is the function formSetSafeWanWebMan of the file /goform/SetRemoteWebCfg of the component HTTP POST Request Handler. The manipulation of the argument remoteIp leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-5847?
It affects 1 product.
Products include Tenda Ac9 Firmware.
How do I fix CVE-2025-5847?
No fix has been published for CVE-2025-5847 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-2025-5847 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5847 exists.
Other vulnerabilities in Tenda Ac9 Firmware
Sources
Also known as GHSA-gx3m-44w2-wmgh.