CVE-2026-4491 Tenda A18 Pro SetIpMacBind fromSetIpMacBind stack-based overflow
A remote attacker can trigger a stack-based buffer overflow in the Tenda A18 Pro router via the SetIpMacBind function, potentially leading to code execution or denial of service.
- 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-2026-4491?
CVE-2026-4491 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 has been found in Tenda A18 Pro 02.03.02.28. Impacted is the function fromSetIpMacBind of the file /goform/SetIpMacBind. Such manipulation of the argument list leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2026-4491?
How do I fix CVE-2026-4491?
No fix has been published for CVE-2026-4491 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-2026-4491 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4491 exists.
Sources
Also known as GHSA-34mp-8w22-xhpw.