CVE record · CVE-2021-22786

Information disclosure in Schneider Electric Modicon M340 CPU (part numbers BMXP34*) and others

CVSS 7.5 HighEPSS 0.0063 · 50th percentile

Published by the CVE Program (CNA: schneider) at 1 Feb 2023, 00:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Schneider Electric	Modicon M340 CPU (part numbers BMXP34*)	affected All to before V3.30 custom
Schneider Electric	Modicon M580 CPU (part numbers BMEP* and BMEH*)	affected All to before V3.20 custom
Schneider Electric	Modicon M580 CPU Safety (part numbers BMEP58S and BMEH58S)	affected All Versions
Schneider Electric	Modicon MC80 (BMKC80)	affected All to before V1.6 custom
Schneider Electric	Modicon Momentum CPU (171CBU*)	affected All to before V2.3 custom
Schneider Electric	Legacy Modicon Quantum	affected All Versions

Identifiers: CVE-2021-22786
CNA: schneider
Weakness (CWE): CWE-200
Tags: Schneider Electric Modicon M340 CPU (part numbers BMXP34*)
Schneider Electric Modicon M580 CPU (part numbers BMEP* and BMEH*)
Schneider Electric Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S)
Schneider Electric Modicon MC80 (BMKC80)
Schneider Electric Modicon Momentum CPU (171CBU*)
Schneider Electric Legacy Modicon Quantum
Information disclosure
Published: 1 Feb 2023
Updated: 5 Feb 2025

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	CNA (schneider)

CISA KEV Not listed.
EPSS 0.0063, the 50th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 1 Feb 2023. New records show when each source confirmed them.

Sources

References from the CNA

download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-221-04&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2022-221-04-Modicon_Controllers_Ethernet_Modules_Security_Notification.pdf

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.