CWE
191
Advisory Published
Updated

CVE-2021-41821: Integer Underflow

First published: Wed Sep 29 2021(Updated: )

Wazuh Manager in Wazuh through 4.1.5 is affected by a remote Integer Underflow vulnerability that might lead to denial of service. A crafted message must be sent from an authenticated agent to the manager.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Wazuh<=4.1.5

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is the severity of CVE-2021-41821?

    CVE-2021-41821 is classified as a medium severity vulnerability.

  • How do I fix CVE-2021-41821?

    To fix CVE-2021-41821, upgrade to Wazuh version 4.2.0 or later.

  • Who is affected by CVE-2021-41821?

    CVE-2021-41821 affects Wazuh Manager versions up to and including 4.1.5.

  • What type of vulnerability is CVE-2021-41821?

    CVE-2021-41821 is an Integer Underflow vulnerability that could result in denial of service.

  • How is CVE-2021-41821 exploited?

    CVE-2021-41821 can be exploited by sending a crafted message from an authenticated agent to the Wazuh Manager.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203