CVE-2018-7821

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Summary

CVECVE-2018-7821
StatePUBLISHED
Assignerschneider
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-05-22 20:29:01 UTC
Updated2026-05-29 15:16:17 UTC
DescriptionAn Environment (CWE-2) vulnerability exists in SoMachine Basic, all versions, and Modicon M221(all references, all versions prior to firmware V1.10.0.0) which could cause cycle time impact when flooding the M221 ethernet interface while the Ethernet/IP adapter is activated.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

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

EPSS: 0.005360000 probability, percentile 0.678000000 (date 2026-06-02)

Problem Types: CWE-770 | CWE-400 | Multiple Vulnerabilities | CWE-400 CWE-400 Uncontrolled Resource Consumption

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary5AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Schneider-electric Modicon M221 - All All All
Operating System Schneider-electric Modicon M221 Firmware All All All All
Application Schneider-electric Somachine Basic All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na SoMachine Basic And Modicon M221 SoMachine Basic All Versions Modicon M221 All References All Versions Prior To Firmware V1.10.0.0 affected SoMachine Basic and Modicon M221, SoMachine Basic, all versions Modicon M221, all references, all versions prior to firmware V1.10.0.0 Not specified

References

ReferenceSourceLinkTags
Security Notification - Modicon M221 | Schneider Electric af854a3a-2127-422b-91ae-364da2661108 www.schneider-electric.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 591089 Schneider Electric Modicon M221 Multiple Vulnerabilities (SEVD-2019-045-01)
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