CVE-2020-20746 Memory corruption in n/a

High 7.2 Published Updated

Remote attackers can execute arbitrary code or cause denial of service via a crafted POST request to the Tenda AC9 router's httpd server.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-20746?

CVE-2020-20746 is a high-severity memory corruption vulnerability in n/a, published on 30 Sep 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A stack-based buffer overflow in the httpd server on Tenda AC9 V15.03.06.60_EN allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via a crafted POST request to /goform/SetStaticRouteCfg.

Weakness: CWE-787

Which versions are affected by CVE-2020-20746?

It affects 1 product.

Products include Tendacn Ac9 Firmware.

How do I fix CVE-2020-20746?

No fix has been published for CVE-2020-20746 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-2020-20746 being exploited?

There is no known exploitation of CVE-2020-20746 in the wild and no public exploit code.

Sources

Also known as GHSA-hxxx-7hr3-hpmx.

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