CVE-2026-6016 Tenda AC9 POST Request WizardHandle decodePwd stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Tenda AC9 router's WizardHandle function via a manipulated POST request, potentially leading to 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-2026-6016?
CVE-2026-6016 is a high-severity memory corruption vulnerability in Tenda Ac9 Firmware, published on 10 Apr 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 AC9 15.03.02.13. The affected element is the function decodePwd of the file /goform/WizardHandle of the component POST Request Handler. Performing a manipulation of the argument WANS results in stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made public and could be used.
Which versions are affected by CVE-2026-6016?
It affects 1 product.
Products include Tenda Ac9 Firmware.
How do I fix CVE-2026-6016?
No fix has been published for CVE-2026-6016 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-2026-6016 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6016 exists.
Other vulnerabilities in Tenda Ac9 Firmware
Sources
Also known as GHSA-wqhq-hx3v-9xwh.