CVE-2021-31757 Memory corruption in n/a
A stack buffer overflow in Tenda AC11 routers allows attackers to execute arbitrary code via a crafted POST request to the VLAN configuration endpoint.
- 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-2021-31757?
CVE-2021-31757 is a critical memory corruption vulnerability in n/a, published on 7 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setVLAN allows attackers to execute arbitrary code on the system via a crafted post request.
Weakness: CWE-787
Which versions are affected by CVE-2021-31757?
It affects 1 product.
Products include Tenda Ac11 Firmware.
How do I fix CVE-2021-31757?
No fix has been published for CVE-2021-31757 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-2021-31757 being exploited?
There is no known exploitation of CVE-2021-31757 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-f847-2v89-88wg.