CVE-2026-26732 Memory corruption in n/a

High 8.8 Published 17 Feb 2026 Updated 11 Mar 2026

A stack-based buffer overflow in the formFilter function allows attackers to execute arbitrary code or cause denial of service on TOTOLINK routers.

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-2026-26732?

CVE-2026-26732 is a high-severity memory corruption vulnerability in n/a, published on 17 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

TOTOLINK A3002RU V2.1.1-B20211108.1455 was discovered to contain a stack-based buffer overflow via the vpnUser or vpnPassword` parameters in the formFilter function.

Weakness: CWE-787, CWE-121

Which versions are affected by CVE-2026-26732?

It affects 1 product.

Products include Totolink A3002ru Firmware.

How do I fix CVE-2026-26732?

No fix has been published for CVE-2026-26732 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-2026-26732 being exploited?

There is no known exploitation of CVE-2026-26732 in the wild and no public exploit code.

Sources

Also known as GHSA-pqh8-xq2x-mwg2.