CVE-2024-6963 Tenda O3 formexeCommand stack-based overflow
Remote attackers can execute arbitrary code via a stack-based buffer overflow in the formexeCommand function of Tenda O3 routers.
- 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-2024-6963?
CVE-2024-6963 is a high-severity memory corruption vulnerability in Tenda O3, published on 22 Jul 2024. 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, has been found in Tenda O3 1.0.0.10. This issue affects the function formexeCommand. The manipulation of the argument cmdinput leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-272117 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2024-6963?
It affects 1 product.
Products include Tenda O3 Firmware1.0.0.10\(2478\).
How do I fix CVE-2024-6963?
No fix has been published for CVE-2024-6963 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-2024-6963 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-6963 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-2025-12213 Tenda O3 setVlanConfig GetValue stack-based overflow
Sources
Also known as GHSA-j7jv-2w23-w786.