NVD

CVE-2021-22792 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

A CWE-476: NULL Pointer Dereference 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).

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 7.5 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

ADP: CISA-ADP

Base Score: 6.5 MEDIUM

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 5.0 MEDIUM

Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-222-04	NIST	Patch Vendor Advisory
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-222-07	CVE, Schneider Electric SE	Not Applicable

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	Schneider Electric SE

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

CVE Modified by Schneider Electric SE 6/16/2026 11:37:47 PM

Action

Type

Old Value

New Value

Added

Affected

[{"vendor":"n/a","product":"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)","versions":[{"version":"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)","status":"affected"}]}]

Initial Analysis by NIST 9/13/2021 2:14:53 PM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Added	CPE Configuration		Record truncated, showing 2048 of 3806 characters. View Entire Change Record OR 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:-::::::: *cp
Added	Reference		https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-222-04 [Patch, Vendor Advisory]
Changed	Reference Type	https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-222-07 No Types Assigned	https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-222-07 Not Applicable

Quick Info

CVE Dictionary Entry:
CVE-2021-22792
NVD Published Date:
09/02/2021
NVD Last Modified:
06/16/2026
Source:
Schneider Electric SE

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2021-22792 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by CISA-ADP 6/16/2026 11:37:47 PM

CVE Modified by Schneider Electric SE 6/16/2026 11:37:47 PM

CVE Modified by CISA-ADP 5/29/2026 11:16:19 AM

CVE Modified by CVE 11/21/2024 12:50:40 AM

CVE Modified by Schneider Electric SE 5/14/2024 4:17:38 AM

Initial Analysis by NIST 9/13/2021 2:14:53 PM

Quick Info