CVE-2022-2004Network attack vector

Communication denial via continuous crafted packet stream

Published Aug 31, 2022 · Updated Apr 16, 2025

Uncontrolled resource consumption in AutomationDirect DirectLOGIC DL06 before 2.72 allows remote attackers to block PLC communications. The PLC accepts a continuously transmitted crafted Ethernet packet without limiting the resource consumption that excludes DirectSoft and other devices. Network reachability is sufficient; exploitation requires no credentials or user interaction and interrupts access to the PLC.

CVSS severity7.5
High
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in AutomationDirect DirectLOGIC DL06 before 2.72 allows remote attackers to block PLC communications. The PLC accepts a continuously transmitted crafted Ethernet packet without limiting the resource consumption that excludes DirectSoft and other devices. Network reachability is sufficient; exploitation requires no credentials or user interaction and interrupts access to the PLC.

The record

CVE
CVE-2022-2004
Published
Aug 31, 2022
Updated
Apr 16, 2025
Vendor
AutomationDirect
Product
DirectLOGIC DL06
Classifications
CWE-400, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 31, 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=D0-06AA <2.72
  2. Affected versionversion=D0-06AR <2.72
  3. Affected versionversion=D0-06DA <2.72
  4. Affected versionversion=D0-06DD1 <2.72
  5. Affected versionversion=D0-06DD1-D <2.72
  6. Affected versionversion=D0-06DD2 <2.72
  7. Affected versionversion=D0-06DD2-D <2.72
  8. Affected versionversion=D0-06DR <2.72
  9. Affected versionversion=D0-06DR-D <2.72

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AutomationDirect · DirectLOGIC DL06version=D0-06AA <2.72; version=D0-06AR <2.72; version=D0-06DA <2.72; version=D0-06DD1 <2.72; version=D0-06DD1-D <2.72; version=D0-06DD2 <2.72; version=D0-06DD2-D <2.72; version=D0-06DR <2.72; version=D0-06DR-D <2.72

Published CVSS scores

7.5ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T0814Denial 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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