CVE-2026-4492 Tenda A18 Pro formSetQosBand set_qosMib_list stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the QoS configuration handler of Tenda A18 Pro routers, 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-2026-4492?
CVE-2026-4492 is a high-severity memory corruption vulnerability in Tenda A18 Pro, published on 20 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in Tenda A18 Pro 02.03.02.28. The affected element is the function set_qosMib_list of the file /goform/formSetQosBand. Performing a manipulation of the argument list results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used.
Which versions are affected by CVE-2026-4492?
How do I fix CVE-2026-4492?
No fix has been published for CVE-2026-4492 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-2026-4492 being exploited?
There is no known exploitation of CVE-2026-4492 in the wild and no public exploit code.
Sources
Also known as GHSA-c8x3-j342-5jgc.