CVE-2025-69700 Memory corruption in n/a

High 7.5 Published 23 Feb 2026 Updated 23 Feb 2026

A stack-based buffer overflow in the Tenda FH1203 router allows attackers to execute arbitrary code or cause a denial of service via the client priority CGI handler.

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-2025-69700?

CVE-2025-69700 is a high-severity memory corruption vulnerability in n/a, published on 23 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Tenda FH1203 V2.0.1.6 contains a stack-based buffer overflow vulnerability in the modify_add_client_prio function, which is reachable via the formSetClientPrio CGI handler.

Weakness: CWE-121

Which versions are affected by CVE-2025-69700?

It affects 1 product.

Products include Tenda Fh1203 Firmware.

How do I fix CVE-2025-69700?

No fix has been published for CVE-2025-69700 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-2025-69700 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-69700 exists.

Sources

Also known as GHSA-438c-878c-qvmf.