CVE-2021-36764

Published: Aug 4, 2021Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

In CODESYS Gateway V3 before 3.5.17.10, there is a NULL Pointer Dereference. Crafted communication requests may cause a Null pointer dereference in the affected CODESYS products and may result in a denial-of-service condition.

Affected (1)

Products: Codesys: Gateway

Codesys

1 product

Gateway

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Codesys Gateway	From 3.0 to 3.5.17.10

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (2)

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16804&token=d8c89c887979b22fdfc9fd5c3aa3804bbb1ddbff&download=

Source: cve@mitre.org

Broken Link

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16804&token=d8c89c887979b22fdfc9fd5c3aa3804bbb1ddbff&download=

Source: af854a3a-2127-422b-91ae-364da2661108

Broken Link

Timeline

No history available yet.