CVE-2026-3869

CWE-303 : Incorrect Implementation of Authentication Algorithm vulnerability exists that could cause loss of confidentiality, integrity and availability of the PLC provided an application project with a lower application level is running on the PLC.

  • Published Sep 11, 2026
  • CVSS 9.2 critical
  • 0.5% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-3869 at the National Vulnerability Database