CVE-2025-12213 Tenda O3 setVlanConfig GetValue stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Tenda O3 router's VLAN configuration 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-2025-12213?
CVE-2025-12213 is a high-severity memory corruption vulnerability in Tenda O3, published on 27 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security vulnerability has been detected in Tenda O3 1.0.0.10(2478). This vulnerability affects the function SetValue/GetValue of the file /goform/setVlanConfig. Such manipulation of the argument lan leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.
Which versions are affected by CVE-2025-12213?
It affects 1 product.
Products include Tenda O3 Firmware1.0.0.10\(2478\).
How do I fix CVE-2025-12213?
No fix has been published for CVE-2025-12213 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-2025-12213 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-12213 exists.
Other vulnerabilities in Tenda O3
- CVE-2025-12209 Tenda O3 setDhcpConfig GetValue stack-based overflow
- CVE-2025-12210 Tenda O3 AdvSetLanip GetValue stack-based overflow
- CVE-2025-12211 Tenda O3 setDmzInfo GetValue stack-based overflow
- CVE-2025-12212 Tenda O3 setNetworkService GetValue stack-based overflow
- CVE-2025-12214 Tenda O3 sysAutoReboot GetValue stack-based overflow
Sources
Also known as GHSA-fxm8-3753-c2p6.