9.2 Critical

CVE-2026-3869 CWE-303 : Incorrect Implementation of Authentication Algorithm vulnerability exists that could cause loss of…

Description

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 and versions

Product	Affected versions	Fixed in
Modicon M580	Versions not published
Modicon M580 Safety	Versions not published

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www.cveye.io/en/cve/CVE-2026-3869

Timeline

Published September 11, 2026
Last modified September 11, 2026

References

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