CVE-2021-46262 Memory corruption in n/a

Critical 9.8 Published 15 Feb 2022 Updated 4 Aug 2024

Attackers can cause a Denial of Service on Tenda AC Series Routers via a stack buffer overflow in the PPPoE module.

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-2021-46262?

CVE-2021-46262 is a critical memory corruption vulnerability in n/a, published on 15 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Tenda AC Series Router AC11_V02.03.01.104_CN was discovered to contain a stack buffer overflow in the PPPoE module. This vulnerability allows attackers to cause a Denial of Service (DoS) via crafted overflow data.

Weakness: CWE-787

Which versions are affected by CVE-2021-46262?

It affects 1 product.

Products include Tenda Ac11 Firmware.

How do I fix CVE-2021-46262?

No fix has been published for CVE-2021-46262 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-2021-46262 being exploited?

There is no known exploitation of CVE-2021-46262 in the wild and no public exploit code.

Sources

Also known as GHSA-xvr7-55fh-xx8f.