What is the severity of CVE-2021-40099?

CVE-2021-40099 has a high severity rating due to its potential for remote code execution.

How do I fix CVE-2021-40099?

To fix CVE-2021-40099, update Concrete CMS to version 8.5.6 or later.

What systems are affected by CVE-2021-40099?

CVE-2021-40099 affects Concrete CMS versions up to and including 8.5.5.

What type of vulnerability is CVE-2021-40099?

CVE-2021-40099 is categorized as a remote code execution vulnerability.

How can I check if my Concrete CMS is affected by CVE-2021-40099?

You can check your Concrete CMS version in the admin dashboard to see if it is at or below 8.5.5.

Vulnerability/
CVE-2021-40099

high

7.2

24/9/2021

4/8/2024

CVE-2021-40099

First published: Fri Sep 24 2021(Updated: )

An issue was discovered in Concrete CMS through 8.5.5. Fetching the update json scheme over HTTP leads to remote code execution.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Concrete5	<=8.5.5

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-40099?
CVE-2021-40099 has a high severity rating due to its potential for remote code execution.
How do I fix CVE-2021-40099?
To fix CVE-2021-40099, update Concrete CMS to version 8.5.6 or later.
What systems are affected by CVE-2021-40099?
CVE-2021-40099 affects Concrete CMS versions up to and including 8.5.5.
What type of vulnerability is CVE-2021-40099?
CVE-2021-40099 is categorized as a remote code execution vulnerability.
How can I check if my Concrete CMS is affected by CVE-2021-40099?
You can check your Concrete CMS version in the admin dashboard to see if it is at or below 8.5.5.

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collector/mitre-cve
source/MITRE
agent/severity
agent/author
agent/last-modified-date
agent/first-publish-date
agent/description
agent/event
agent/source
agent/softwarecombine
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/concretecms
canonical/concrete5
version/concrete5/8.5.5

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Frequently Asked Questions

What is the severity of CVE-2021-40099?
CVE-2021-40099 has a high severity rating due to its potential for remote code execution.
How do I fix CVE-2021-40099?
To fix CVE-2021-40099, update Concrete CMS to version 8.5.6 or later.
What systems are affected by CVE-2021-40099?
CVE-2021-40099 affects Concrete CMS versions up to and including 8.5.5.
What type of vulnerability is CVE-2021-40099?
CVE-2021-40099 is categorized as a remote code execution vulnerability.
How can I check if my Concrete CMS is affected by CVE-2021-40099?
You can check your Concrete CMS version in the admin dashboard to see if it is at or below 8.5.5.