Modicon M241/M251 logic controllers firmware prior to V5.1.9.1

Affected and fixed version statements observed in the public BlackTree CVE catalogue. These statements describe vulnerability scope, not publisher support entitlement.

Lifecycle evidence status

This identity is present in BlackTree CVE records, but no product-specific publisher support or retirement history is currently registered in Lifecycle.

A missing support date does not mean the product is supported. CVE publication dates and affected-version ranges must not be interpreted as EOL dates.

CVE-observed version history

CVE	Published	Affected versions	Fixed version information	Publisher evidence
CVE-2021-22699	26 May 2021	Modicon M241/M251 logic controllers firmware prior to V5.1.9.1	A fix for this vulnerability is available by following the steps below: 1. Update Software - On the engineering workstation, update to EcoStruxure Machine Expert V2.0 or above. 2. Update Firmware - On Modicon M241/M251 Logic Controllers, update to firmware version V5.1.9.14 or higher available within EcoStruxure Machine Expert V2.0. A reboot is needed.	Update reference ↗

How this record is maintained

The CVE inventory is reconciled automatically from cve.blacktree.nl. Exact identity matches link to existing Lifecycle product or package histories. Unmatched products stay in a prioritised publisher-source research queue, and Lifecycle marks the date gap instead of inferring a support boundary from vulnerability data.