CVE-2022-2003

Password disclosure via crafted serial message

Published Aug 31, 2022 · Updated Apr 16, 2025

Cleartext password transmission in AutomationDirect DirectLOGIC DL06 firmware before 2.72 allows local users to obtain the PLC password. The CPU serial-port handler returns the stored PLC password in cleartext when it processes a specifically crafted serial message. Physical access to the PLC serial port is required; the disclosed credential permits unauthorized project changes and process interruption.

CVSS severity7.7
High
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext password transmission in AutomationDirect DirectLOGIC DL06 firmware before 2.72 allows local users to obtain the PLC password. The CPU serial-port handler returns the stored PLC password in cleartext when it processes a specifically crafted serial message. Physical access to the PLC serial port is required; the disclosed credential permits unauthorized project changes and process interruption.

The record

CVE
CVE-2022-2003
Published
Aug 31, 2022
Updated
Apr 16, 2025
Vendor
AutomationDirect
Product
DirectLOGIC DL06
Classifications
CWE-319, T1552
Attack vector
physical
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 vectorphysical
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

7.7CISACVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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