CVE-2020-7565 - Vulnerability Details - OpenCVE

A CWE-326: Inadequate Encryption Strength vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption key when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

Access Vector Adjacent Network

Access Complexity Medium

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.0029.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Schneider-electric	Modicon M221 Modicon M221 Firmware

Configuration 1 [-]

AND

cpe:2.3:o:schneider-electric:modicon_m221_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:schneider-electric:modicon_m221:-:*:*:*:*:*:*:*

No data.

No data.

References

Link	Providers
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/

History

Fri, 29 May 2026 14:30:00 +0000

Type	Values Removed	Values Added
Metrics	cvssV3_1 `{'score': 7.3, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'}`	ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}` cvssV3_1 `{'score': 7.1, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}`

MITRE

Status: PUBLISHED

Assigner: schneider

Published: 2020-11-19T21:10:09.000Z

Updated: 2026-05-29T13:28:02.233Z

Reserved: 2020-01-21T00:00:00.000Z

Link: CVE-2020-7565

Vulnrichment

Updated: 2024-08-04T09:33:19.843Z

NVD

Status : Modified

Published: 2020-11-19T22:15:14.943

Modified: 2026-06-17T03:25:01.360

Link: CVE-2020-7565

Redhat

No data.

OpenCVE Enrichment

No data.

{"containers": {"cna": {"affected": [{"product": "Modicon M221, all references, all versions", "vendor": "n/a", "versions": [{"status": "affected", "version": "Modicon M221, all references, all versions"}]}], "descriptions": [{"lang": "en", "value": "A CWE-326: Inadequate Encryption Strength vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption key when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-326", "description": "CWE-326: Inadequate Encryption Strength", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-12-11T20:30:55.000Z", "orgId": "076d1eb6-cfab-4401-b34d-6dfc2a413bdb", "shortName": "schneider"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/"}, {"tags": ["x_refsource_MISC"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cybersecurity@schneider-electric.com", "ID": "CVE-2020-7565", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Modicon M221, all references, all versions", "version": {"version_data": [{"version_value": "Modicon M221, all references, all versions"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A CWE-326: Inadequate Encryption Strength vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption key when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-326: Inadequate Encryption Strength"}]}]}, "references": {"reference_data": [{"name": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/", "refsource": "MISC", "url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/"}, {"name": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04", "refsource": "MISC", "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T09:33:19.843Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04"}]}, {"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-05-29T13:27:45.918932Z", "id": "CVE-2020-7565", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-29T13:28:02.233Z"}}]}, "cveMetadata": {"assignerOrgId": "076d1eb6-cfab-4401-b34d-6dfc2a413bdb", "assignerShortName": "schneider", "cveId": "CVE-2020-7565", "datePublished": "2020-11-19T21:10:09.000Z", "dateReserved": "2020-01-21T00:00:00.000Z", "dateUpdated": "2026-05-29T13:28:02.233Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.2"}

{"containers": {"cna": {"affected": [{"product": "Modicon M221, all references, all versions", "vendor": "n/a", "versions": [{"status": "affected", "version": "Modicon M221, all references, all versions"}]}], "descriptions": [{"lang": "en", "value": "A CWE-326: Inadequate Encryption Strength vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption key when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-326", "description": "CWE-326: Inadequate Encryption Strength", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-12-11T20:30:55.000Z", "orgId": "076d1eb6-cfab-4401-b34d-6dfc2a413bdb", "shortName": "schneider"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/"}, {"tags": ["x_refsource_MISC"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cybersecurity@schneider-electric.com", "ID": "CVE-2020-7565", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Modicon M221, all references, all versions", "version": {"version_data": [{"version_value": "Modicon M221, all references, all versions"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A CWE-326: Inadequate Encryption Strength vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption key when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-326: Inadequate Encryption Strength"}]}]}, "references": {"reference_data": [{"name": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/", "refsource": "MISC", "url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/"}, {"name": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04", "refsource": "MISC", "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T09:33:19.843Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04"}]}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2020-7565", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-05-29T13:27:45.918932Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-29T13:27:36.784Z"}}]}, "cveMetadata": {"assignerOrgId": "076d1eb6-cfab-4401-b34d-6dfc2a413bdb", "assignerShortName": "schneider", "cveId": "CVE-2020-7565", "datePublished": "2020-11-19T21:10:09.000Z", "dateReserved": "2020-01-21T00:00:00.000Z", "dateUpdated": "2026-05-29T13:28:02.233Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "Modicon M221, all references, all versions", "vendor": "n/a", "versions": [{"status": "affected", "version": "Modicon M221, all references, all versions"}]}], "source": "cybersecurity@se.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:schneider-electric:modicon_m221_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "D7AC7A26-CCFA-40E0-8111-5A3385D34E8B", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:schneider-electric:modicon_m221:-:*:*:*:*:*:*:*", "matchCriteriaId": "BB0D83F4-B718-47AB-AFB8-B576CB138AAC", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A CWE-326: Inadequate Encryption Strength vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption key when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller."}, {"lang": "es", "value": "CWE-326: Se presenta una vulnerabilidad de Fortaleza de Cifrado Inadecuada en Modicon M221 (todas las referencias, todas las versiones) que podr\u00eda permitir al atacante romper la clave de cifrado cuando el atacante haya capturado el tr\u00e1fico entre EcoStruxure Machine - Software b\u00e1sico y el controlador Modicon M221"}], "id": "CVE-2020-7565", "lastModified": "2026-06-17T03:25:01.360", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:A/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 5.5, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2020-7565", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-29T13:27:45.918932Z", "version": "2.0.3"}}]}, "published": "2020-11-19T22:15:14.943", "references": [{"source": "cybersecurity@se.com", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04"}, {"source": "cybersecurity@se.com", "tags": ["Vendor Advisory"], "url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.se.com/ww/en/download/document/SEVD-2020-315-05/"}], "sourceIdentifier": "cybersecurity@se.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-326"}], "source": "cybersecurity@se.com", "type": "Secondary"}]}