CVE-2026-15543 Tenda CH22 CertListInfo formCertListInfo buffer overflow
Remote attackers can trigger a buffer overflow in the Tenda CH22 router's certificate list interface, potentially leading to code execution or service disruption.
- 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-2026-15543?
CVE-2026-15543 is a high-severity memory corruption vulnerability in Tenda CH22, published on 13 Jul 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 CH22 1.0.0.1. This impacts the function formCertListInfo of the file /goform/CertListInfo. The manipulation of the argument Name results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.
Which versions are affected by CVE-2026-15543?
How do I fix CVE-2026-15543?
No fix has been published for CVE-2026-15543 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-2026-15543 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15543 exists.
Sources
Also known as GHSA-mg6v-gcmc-mw8w.