CVE-2025-28136 Memory corruption in n/a

Medium 6.5 Published 15 Apr 2025 Updated 15 Apr 2025

A buffer overflow in the downloadFile.cgi endpoint of TOTOLINK A800R routers allows attackers to execute arbitrary code or cause denial of service.

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-2025-28136?

CVE-2025-28136 is a medium-severity memory corruption vulnerability in n/a, published on 15 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

TOTOLINK A800R V4.1.2cu.5137_B20200730 was found to contain a buffer overflow vulnerability in the downloadFile.cgi.

Weakness: CWE-121

Which versions are affected by CVE-2025-28136?

It affects 1 product.

Products include Totolink A800r Firmware.

How do I fix CVE-2025-28136?

No fix has been published for CVE-2025-28136 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-2025-28136 being exploited?

There is no known exploitation of CVE-2025-28136 in the wild and no public exploit code.

Sources

Also known as GHSA-qc9g-vf45-fwfp.