CVE-2025-71026 Memory corruption in n/a
Attackers can cause a Denial of Service on Tenda AX-3 routers via a crafted request exploiting a stack overflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-71026?
CVE-2025-71026 is a high-severity memory corruption vulnerability in Tenda Ax3 Firmware, published on 13 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Tenda AX-3 v16.03.12.10_CN was discovered to contain a stack overflow in the wanSpeed2 parameter of the fromAdvSetMacMtuWan function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
Which versions are affected by CVE-2025-71026?
It affects 1 product.
Products include Tenda Ax3 Firmware.
How do I fix CVE-2025-71026?
No fix has been published for CVE-2025-71026 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-2025-71026 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71026 exists.
Other vulnerabilities in Tenda Ax3 Firmware
Sources
Also known as GHSA-xf5r-2w26-px54.