QwikSec

Security Database

CVE

CWE

Training

CVE Database
/

CVE-2020-37216

Back to search

CVE-2020-37216

Published: Apr 3, 2026

Modified: May 14, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

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.

VendorProductVersions

Belden

Hirschmann HiOS

unaffected
>= 08.1.00
unaffected
>= 07.1.01
affected
05.00.00 - <= 08.0.00

Weaknesses (CWE)

CWE-20

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now