CVE-2026-1329 Tenda AX1803 WifiGuestSet fromGetWifiGuestBasic stack-based overflow

High 8.7 Published 22 Jan 2026 Updated 23 Feb 2026

A remote attacker can trigger a stack-based buffer overflow in the Tenda AX1803 router's guest Wi-Fi settings, 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-2026-1329?

CVE-2026-1329 is a high-severity memory corruption vulnerability in Tenda Ax1803 Firmware, published on 22 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A flaw has been found in Tenda AX1803 1.0.0.1. The affected element is the function fromGetWifiGuestBasic of the file /goform/WifiGuestSet. Executing a manipulation of the argument guestWrlPwd/guestEn/guestSsid/hideSsid/guestSecurity can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been published and may be used.

Weakness: CWE-121, CWE-119

Which versions are affected by CVE-2026-1329?

It affects 1 product.

Products include Tenda Ax1803 Firmware.

How do I fix CVE-2026-1329?

No fix has been published for CVE-2026-1329 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-2026-1329 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1329 exists.

All Tenda Ax1803 Firmware vulnerabilities

Sources

Also known as GHSA-9mmx-v7rg-gq3x.