CVE-2020-37216

Hirschmann HiOS devices versions prior to 08.1.00 and 07.1.01 contain a denial of service vulnerability in the EtherNet/IP stack where improper handling of packet length fields allows remote attackers to crash or hang the device. Attackers can send specially crafted UDP EtherNet/IP packets with a length value larger than the actual packet size to render the device inoperable.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://assets.belden.com/m/3d3e2cbfa4860258/original/Belden-Security-Bulletin-BSECV-2019-14.pdf
https://www.vulncheck.com/advisories/hirschmann-hios-ethernet-ip-stack-denial-of-service

Configurations

No configuration.

History

No history.

Information

Published : 2026-04-03 21:17

Updated : 2026-07-24 22:10

NVD link : CVE-2020-37216

Mitre link : CVE-2020-37216

CVE.ORG link : CVE-2020-37216

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

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