CVE-2021-22699: Input Validation
Improper Input Validation vulnerability exists in Modicon M241/M251 logic controllers firmware prior to V5.1.9.1 that could cause denial of service when specific crafted requests are sent to the controller over HTTP.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID of this security issue?
The vulnerability ID of this security issue is CVE-2021-22699.
What is the title of this security issue?
The title of this security issue is 'Improper Input Validation vulnerability exists in Modicon M241/M251 logic controllers firmware prior to V5.1.9.1'.
What is the severity of CVE-2021-22699?
The severity of CVE-2021-22699 is high with a severity value of 7.5.
Which software versions are affected by CVE-2021-22699?
Modicon M241/M251 logic controllers firmware versions prior to V5.1.9.1 are affected by CVE-2021-22699.
How does CVE-2021-22699 impact the affected software?
CVE-2021-22699 can cause denial of service when specific crafted requests are sent to the Modicon M241/M251 logic controllers firmware over HTTP.
Is Schneider-electric Modicon M241 vulnerable to CVE-2021-22699?
No, Schneider-electric Modicon M241 is not vulnerable to CVE-2021-22699.
Is Schneider-electric Modicon M251 vulnerable to CVE-2021-22699?
No, Schneider-electric Modicon M251 is not vulnerable to CVE-2021-22699.
How can I fix CVE-2021-22699?
To fix CVE-2021-22699, update the Modicon M241/M251 logic controllers firmware to version V5.1.9.1 or later.
Where can I find more information about CVE-2021-22699?
You can find more information about CVE-2021-22699 at the following reference: [Link](https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-05)
What is the Common Weakness Enumeration (CWE) ID associated with CVE-2021-22699?
The Common Weakness Enumeration (CWE) ID associated with CVE-2021-22699 is CWE-20.