CVE-2025-28135 Memory corruption in n/a

High 7.5 Published Updated

A buffer overflow in the downloadFile.cgi script of TOTOLINK A810R routers allows attackers to execute arbitrary code or cause a 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-2025-28135?

CVE-2025-28135 is a high-severity memory corruption vulnerability in n/a, published on 27 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

TOTOLINK A810R V4.1.2cu.5182_B20201026 was found to contain a buffer overflow vulnerability in downloadFile.cgi.

Weakness: CWE-121

Which versions are affected by CVE-2025-28135?

It affects 1 product.

Products include Totolink A810r Firmware.

How do I fix CVE-2025-28135?

No fix has been published for CVE-2025-28135 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-2025-28135 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-28135 exists.

Sources

Also known as GHSA-5rg6-fchv-4f55.

Is CVE-2025-28135 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free