7.5
CWE
20
Advisory Published
Updated

CVE-2021-22800: Input Validation

First published: Fri Feb 11 2022(Updated: )

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)

Credit: cybersecurity@se.com

Affected SoftwareAffected VersionHow to fix
Schneider-electric Modicon M218 Firmware<=5.1.0.6
Schneider-electric Modicon M218

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Frequently Asked Questions

  • What is CVE-2021-22800?

    CVE-2021-22800 is a vulnerability that allows for a Denial of Service attack on the Modicon M218 Logic Controller.

  • What is the severity of CVE-2021-22800?

    CVE-2021-22800 has a severity level of 7.5, which is considered high.

  • How does CVE-2021-22800 affect the Modicon M218 Logic Controller?

    CVE-2021-22800 affects the Modicon M218 Logic Controller by allowing a Denial of Service attack when a crafted packet is sent to the controller over network port 1105/TCP.

  • What is the affected version of the Modicon M218 Logic Controller?

    The affected version of the Modicon M218 Logic Controller is V5.1.0.6 and prior.

  • How can I fix CVE-2021-22800?

    To fix CVE-2021-22800, it is recommended to update the Modicon M218 Logic Controller firmware to a version that is not vulnerable.

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