CVE-2021-36765 Null dereference in n/a
Attackers can cause a denial of service in CODESYS Control runtime systems by sending specific EtherNet/IP requests that trigger a null pointer dereference.
- 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-2021-36765?
CVE-2021-36765 is a high-severity vulnerability in n/a, published on 4 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In CODESYS EtherNetIP before 4.1.0.0, specific EtherNet/IP requests may cause a null pointer dereference in the downloaded vulnerable EtherNet/IP stack that is executed by the CODESYS Control runtime system.
Weakness: CWE-476
Which versions are affected by CVE-2021-36765?
It affects 1 product.
Products include Codesys Ethernetip.
How do I fix CVE-2021-36765?
No fix has been published for CVE-2021-36765 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-36765 being exploited?
There is no known exploitation of CVE-2021-36765 in the wild and no public exploit code.
Sources
Also known as GHSA-3mpj-h64q-x7gf.