Modicon M580 CPU (part numbers BMEP* and BMEH, all versions), Modicon M340 CPU (part numbers BMXP34, all versions), Modicon MC80 (part numbers BMKC80, all versions), Modicon Momentum Ethernet CPU (part numbers 171CBU, all versions), PLC Simulator for EcoStruxureª Control Expert, including all Unity Pro versions (former name of EcoStruxureª Control Expert, all versions), PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert, all versions), Modicon Quantum CPU (part numbers 140CPU, all versions), Modicon Premium CPU (part numbers TSXP5, all versions)

CVE-2021-22789

MEDIUM 6.5

At a glance

Source: NVD
EPSS: EPSS 0.85 % · percentile 58 (2026-10-31)
State: PUBLISHED
Published: 2021-09-02 16:52 UTC
Updated: 2026-05-29 13:53 UTC
Assigner: schneider
NVD status: Modified

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Description

A CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability that could cause a Denial of Service on the Modicon PLC controller / simulator when updating the controller application with a specially crafted project file exists in Modicon M580 CPU (part numbers BMEP* and BMEH*, all versions), Modicon M340 CPU (part numbers BMXP34*, all versions), Modicon MC80 (part numbers BMKC80*, all versions), Modicon Momentum Ethernet CPU (part numbers 171CBU*, all versions), PLC Simulator for EcoStruxureª Control Expert, including all Unity Pro versions (former name of EcoStruxureª Control Expert, all versions), PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert, all versions), Modicon Quantum CPU (part numbers 140CPU*, all versions), Modicon Premium CPU (part numbers TSXP5*, all versions).

Weaknesses (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-222-04

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 2.0	MEDIUM 4.0	AV:N/AC:L/Au:S/C:N/I:N/A:P	NVD · nvd@nist.gov (Primary)

European references

ENISA EUVD · EUVD-2021-9924
GCVE · GCVE-0-2021-22789

CERT-FR advisories

CERTFR-2023-AVI-0273 — Multiples vulnérabilités dans les produits Schneider · cert.ssi.gouv.fr
CERTFR-2022-AVI-717 — Multiples vulnérabilités dans les produits Schneider · cert.ssi.gouv.fr
CERTFR-2022-AVI-1093 — Multiples vulnérabilités dans les produits Schneider · cert.ssi.gouv.fr
CERTFR-2021-AVI-622 — Multiples vulnérabilités dans les produits Schneider Electric · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:h:schneider-electric:modicon_m340_bmxp341000:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m340_bmxp342010:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m340_bmxp342020:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m340_bmxp342030:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmeh582040:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmeh582040c:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmeh582040s:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmeh584040:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmeh584040c:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmeh584040s:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmeh586040:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmeh586040c:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmeh586040s:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep581020:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep581020h:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep582020:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep582020h:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep582040:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep582040h:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep582040s:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep583020:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep583040:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep584020:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep584040:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep584040s:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep585040:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep585040c:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep586040:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_m580_bmep586040c:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_mc80_bmkc8020301:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_mc80_bmkc8020310:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_mc80_bmkc8030311:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_momentum_171cbu78090:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_momentum_171cbu98090:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_momentum_171cbu98091:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_1634m:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_2634m:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_2834m:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_454m:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:modicon_premium_tsxp57_4634m:-:*:*:*:*:*:*:*
+9 more

Affected products

Product	Versions
Modicon M580 CPU (part numbers BMEP* and BMEH, all versions), Modicon M340 CPU (part numbers BMXP34, all versions), Modicon MC80 (part numbers BMKC80, all versions), Modicon Momentum Ethernet CPU (part numbers 171CBU, all versions), PLC Simulator for EcoStruxureª Control Expert, including all Unity Pro versions (former name of EcoStruxureª Control Expert, all versions), PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert, all versions), Modicon Quantum CPU (part numbers 140CPU, all versions), Modicon Premium CPU (part numbers TSXP5, all versions)	affected Modicon M580 CPU (part numbers BMEP* and BMEH, all versions), Modicon M340 CPU (part numbers BMXP34, all versions), Modicon MC80 (part numbers BMKC80, all versions), Modicon Momentum Ethernet CPU (part numbers 171CBU, all versions), PLC Simulator for EcoStruxureª Control Expert, including all Unity Pro versions (former name of EcoStruxureª Control Expert, all versions), PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert, all versions), Modicon Quantum CPU (part numbers 140CPU, all versions), Modicon Premium CPU (part numbers TSXP5, all versions)

Product

Versions

Modicon M580 CPU (part numbers BMEP* and BMEH*, all versions), Modicon M340 CPU (part numbers BMXP34*, all versions), Modicon MC80 (part numbers BMKC80*, all versions), Modicon Momentum Ethernet CPU (part numbers 171CBU*, all versions), PLC Simulator for EcoStruxureª Control Expert, including all Unity Pro versions (former name of EcoStruxureª Control Expert, all versions), PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert, all versions), Modicon Quantum CPU (part numbers 140CPU*, all versions), Modicon Premium CPU (part numbers TSXP5*, all versions)

affected Modicon M580 CPU (part numbers BMEP* and BMEH*, all versions), Modicon M340 CPU (part numbers BMXP34*, all versions), Modicon MC80 (part numbers BMKC80*, all versions), Modicon Momentum Ethernet CPU (part numbers 171CBU*, all versions), PLC Simulator for EcoStruxureª Control Expert, including all Unity Pro versions (former name of EcoStruxureª Control Expert, all versions), PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert, all versions), Modicon Quantum CPU (part numbers 140CPU*, all versions), Modicon Premium CPU (part numbers TSXP5*, all versions)

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD