CVE-2022-1737Network attack vector

Unauthenticated DoS via crafted packet

Published Jul 12, 2022 · Updated Apr 16, 2025

Out-of-bounds write in Pyramid Solutions EtherNet/IP kits through 4.4.0 allows remote attackers to cause denial of service via crafted packets. The EtherNet/IP Adapter and Scanner stacks write packet-controlled data beyond an allocated buffer when parsing a specially crafted packet. No authentication or user interaction is required on the network path; successful exploitation can interrupt the affected protocol service, with no reported confidentiality or integrity impact.

CVSS severity7.5
High
EPSS probability1.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Pyramid Solutions EtherNet/IP kits through 4.4.0 allows remote attackers to cause denial of service via crafted packets. The EtherNet/IP Adapter and Scanner stacks write packet-controlled data beyond an allocated buffer when parsing a specially crafted packet. No authentication or user interaction is required on the network path; successful exploitation can interrupt the affected protocol service, with no reported confidentiality or integrity impact.

The record

CVE
CVE-2022-1737
Published
Jul 12, 2022
Updated
Apr 16, 2025
Vendor
Pyramid Solutions
Product
EtherNet/IP Adapter Development Kit
Classifications
CWE-787, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=all <=4.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pyramid Solutions · EtherNet/IP Adapter Development Kitversion=all <=4.4.0
Pyramid Solutions · EtherNet/IP Scanner Development Kitversion=all 4.4.0
Pyramid Solutions · EtherNet/IP Scanner DLL Kitversion=all 4.4.0
Pyramid Solutions · EtherNet/IP Adapter DLL Kitversion=all <=4.4.0

Published CVSS scores

5.0NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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