CVE-2021-22800

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

A CWE-20: Improper Input Validation vulnerability exists that could cause a Denial of Service when a crafted packet is sent to the controller over network port 1105/TCP. Affected Product: Modicon M218 Logic Controller (V5.1.0.6 and prior)

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

VendorProductVersions
n/aModicon M218 Logic Controller (V5.1.0.6 and prior)Modicon M218 Logic Controller (V5.1.0.6 and prior)

References

Timeline

Published
Feb 11, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-22800: High severity, CVSS 7.5 | Vulnix