CVE-2020-37216
Hirschmann HiOS EtherNet/IP Stack Denial of Service
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-20 |
| Vendor | belden |
| Product | hirschmann hios |
| Published | Apr 3, 2026 |
| Last Updated | Apr 4, 2026 |
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CVSS v3 Breakdown
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
Affected Versions
Belden / Hirschmann HiOS
05.00.00 ≤ 08.0.00