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CVE-2020-37216— Hirschmann HiOS EtherNet/IP Stack Denial of Service

CVSS 7.5 · High EPSS 0.92% · P58

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 3

VendorProductVersion RangeStatus
BeldenHirschmann HiOS>= 08.1.00unaffected
>= 07.1.01unaffected
05.00.00≤ 08.0.00affected
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I. Basic Information for CVE-2020-37216

Vulnerability Information
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Vulnerability Title
Hirschmann HiOS EtherNet/IP Stack Denial of Service
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Belden Hirschmann HiOS 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Belden Hirschmann HiOS是美国Belden公司的一个工业以太网交换机操作系统。 Belden Hirschmann HiOS 08.1.00之前版本和07.1.01之前版本存在输入验证错误漏洞，该漏洞源于EtherNet/IP栈中数据包长度字段处理不当，可能导致远程拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
BeldenHirschmann HiOS >= 08.1.00 -

II. Public POCs for CVE-2020-37216

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III. Intelligence Information for CVE-2020-37216

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Vendor Advisories for CVE-2020-37216 (2)

Same Patch Batch · Belden · 2026-04-03 · 11 CVEs total

CVE-2017-202379.8 CRITICALHirschmann Industrial HiVision Authentication Bypass Remote Code Execution
CVE-2018-252379.8 CRITICALHirschmann HiSecOS Buffer Overflow via HTTPS Login
CVE-2018-252369.8 CRITICALHirschmann HiOS HiSecOS Authentication Bypass via HTTP Management
CVE-2017-202349.8 CRITICALGarrettCom Magnum 6K and 10K Authentication Bypass via Hardcoded String
CVE-2021-44779.1 CRITICALHirschmann HiLCOS OpenBAT BAT450 IPv6 IPsec Firewall Bypass
CVE-2015-101488.2 HIGHHirschmann HiLCOS Hard-coded Credentials SSH SSL Keys
CVE-2016-150588.1 HIGHHirschmann HiLCOS Classic Platform Password Exposure via SNMP
CVE-2022-49877.3 HIGHHirschmann Industrial HiVision External Application Path Hijacking Leading to Arbitrary Co
CVE-2017-202387.1 HIGHHirschmann Industrial HiVision Improper Authorization Privilege Escalation
CVE-2017-202335.4 MEDIUMHirschmann HiLCOS Layer-2 Firewall Multicast Broadcast Traffic Bypass

IV. Related Vulnerabilities

Same product: Hirschmann HiOS
Same vendor: Belden
Same weakness: CWE-20

V. Comments for CVE-2020-37216

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