CWE-754: Improper Check in Modbus TCP Stack Enables Arbitrary Code Exec
CVE-2026-0667 Published on July 29, 2026
CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability that could cause arbitrary code execution, denial of service and loss of confidentiality & integrity when communicating over the Modbus TCP protocol.
Weakness Type
Improper Check for Unusual or Exceptional Conditions
The software does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the software.
Products Associated with CVE-2026-0667
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Affected Versions
Schneider Electric SCADAPack 47x:- Version Versions prior to R3.4.2 (Firmware version prior to 9.12.2) is affected.
- Version Versions prior to R3.4.2 (Firmware version prior to 9.12.2) is affected.
- Version All Versions is affected.
- Version Versions prior to R3.4.2 is affected.