Advisory Published

MFSA2020-43: Security Vulnerabilities fixed in Firefox ESR 78.3

First published: Tue Sep 22 2020(Updated: )

Security Vulnerabilities fixed in Firefox ESR 78.3

Affected SoftwareAffected VersionHow to fix
Firefox ESR<78.3
78.3

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 MFSA2020-43?

    The severity of MFSA2020-43 is classified as moderate.

  • How do I fix MFSA2020-43?

    To fix MFSA2020-43, update your Firefox ESR to version 78.3 or later.

  • What vulnerabilities were addressed in MFSA2020-43?

    MFSA2020-43 addresses multiple security vulnerabilities affecting Firefox ESR.

  • Which versions of Firefox ESR are affected by MFSA2020-43?

    Firefox ESR versions prior to 78.3 are affected by MFSA2020-43.

  • Who is the vendor responsible for resolving MFSA2020-43?

    Mozilla is the vendor responsible for addressing the vulnerabilities in MFSA2020-43.

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