CVE-2026-0667Network attack vector

Unauthenticated code execution via crafted Modbus traffic

Published Jul 29, 2026 · Updated Jul 29, 2026

Improper exception handling in Schneider Electric SCADAPack x70 products and RemoteConnect allows remote attackers to execute code. Schneider Electric has not disclosed the specific parser, exceptional condition, or failed check; crafted Modbus TCP traffic reaches the flaw. Network access to the Modbus TCP service is sufficient without authentication or user interaction, enabling code execution, controller data disclosure or alteration, and service interruption.

CVSS severity9.3
Critical
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper exception handling in Schneider Electric SCADAPack x70 products and RemoteConnect allows remote attackers to execute code. Schneider Electric has not disclosed the specific parser, exceptional condition, or failed check; crafted Modbus TCP traffic reaches the flaw. Network access to the Modbus TCP service is sufficient without authentication or user interaction, enabling code execution, controller data disclosure or alteration, and service interruption.

The record

CVE
CVE-2026-0667
Published
Jul 29, 2026
Updated
Jul 29, 2026
Vendor
Distributed Data Systems
Product
SCADAPack 47x
Classifications
CWE-754, T0866
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 2026Record 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=Versions prior to R3.4.2 (Firmware version prior to 9.12.2)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Distributed Data Systems · SCADAPack 47xversion=Versions prior to R3.4.2 (Firmware version prior to 9.12.2)
Distributed Data Systems · RemoteConnectversion=Versions prior to R3.4.2
Distributed Data Systems · SCADAPack 47xiversion=Versions prior to R3.4.2 (Firmware version prior to 9.12.2)
Distributed Data Systems · SCADAPack 57xversion=All Versions

Published CVSS scores

9.3Schneider Electric SECVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
T0866Exploitation of Remote Services

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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