Vulnerability in Schneider Electric Modicon M580
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.
Affected products
- Schneider Electric Modicon M580 — versions All versions with an application level below 4.00
- Schneider Electric Modicon M580 Safety — versions All versions with an application level below 4.20