Null Pointer Dereference in CODESYS Gateway by CODESYS
CVE-2021-36764

7.5HIGH

Key Information:

Vendor

Codesys

Status
Gateway
Vendor
CVE Published:
4 August 2021

What is CVE-2021-36764?

The CODESYS Gateway V3 versions prior to 3.5.17.10 are susceptible to a NULL pointer dereference vulnerability. This occurs due to crafted communication requests that exploit the software, potentially leading to a denial-of-service (DoS) condition. Attackers could leverage this flaw to disrupt the service, causing significant operational downtime and impacting the reliability of the affected systems.

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References

https://customers.codesys.com/index.php?eID=dumpFile&t=f&...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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