Advisory Published

MFSA2021-42: Security Vulnerabilities fixed in Thunderbird 78.14

First published: Tue Sep 07 2021(Updated: )

Security Vulnerabilities fixed in Thunderbird 78.14

Affected SoftwareAffected VersionHow to fix
<78.14
78.14

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.

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of MFSA2021-42?

    The severity of MFSA2021-42 is rated as high, indicating a significant risk to users.

  • How do I fix MFSA2021-42?

    To fix MFSA2021-42, users should update Thunderbird to version 78.14 or later.

  • What vulnerabilities are addressed in MFSA2021-42?

    MFSA2021-42 addresses multiple security vulnerabilities including memory safety issues.

  • Which versions of Thunderbird are affected by MFSA2021-42?

    All versions of Thunderbird prior to 78.14 are affected by MFSA2021-42.

  • Is it necessary to update if I am using Thunderbird 78.14?

    If you are using Thunderbird 78.14, it is not necessary to update further for the vulnerabilities fixed in MFSA2021-42.

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