CVE-2022-37840 Memory corruption in n/a

Critical 9.8 Published 6 Sep 2022 Updated 3 Aug 2024

A buffer overflow in the downloadfile.cgi script allows attackers to execute arbitrary code on TOTOLINK A860R routers.

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-2022-37840?

CVE-2022-37840 is a critical memory corruption vulnerability in n/a, published on 6 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In TOTOLINK A860R V4.1.2cu.5182_B20201027, the main function in downloadfile.cgi has a buffer overflow vulnerability.

Weakness: CWE-120

Which versions are affected by CVE-2022-37840?

It affects 1 product.

Products include Totolink A860r Firmware.

How do I fix CVE-2022-37840?

No fix has been published for CVE-2022-37840 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-2022-37840 being exploited?

There is no known exploitation of CVE-2022-37840 in the wild and no public exploit code.

Sources

Also known as GHSA-pc69-233p-vv53.