CVE-2025-7527 Tenda FH1202 AdvSetWan fromAdvSetWan stack-based overflow

High 8.7 Published 13 Jul 2025 Updated 15 Jul 2025

Remote attackers can trigger a stack-based buffer overflow in the Tenda FH1202 router via the PPPOEPassword argument, 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-2025-7527?

CVE-2025-7527 is a high-severity memory corruption vulnerability in Tenda Fh1202 Firmware, published on 13 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was found in Tenda FH1202 1.2.0.14(408). It has been rated as critical. This issue affects the function fromAdvSetWan of the file /goform/AdvSetWan. The manipulation of the argument PPPOEPassword leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-121, CWE-119

Which versions are affected by CVE-2025-7527?

It affects 1 product.

Products include Tenda Fh1202 Firmware.

How do I fix CVE-2025-7527?

No fix has been published for CVE-2025-7527 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-2025-7527 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7527 exists.

All Tenda Fh1202 Firmware vulnerabilities

Sources

Also known as GHSA-7qjh-cgmp-cfvg.