MFSA2021-04: Security Vulnerabilities fixed in Firefox ESR 78.7

Published Jan 26, 2021
·
Updated

Security Vulnerabilities fixed in Firefox ESR 78.7

Affected Software

1 affected componentFixes available
Mozilla Firefox ESR<78.7
78.7

Event History

Jan 26, 2021
Advisory Published
via Mozilla·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of MFSA2021-04?

The severity of MFSA2021-04 varies based on the specific vulnerabilities fixed, but they impact the security of the Firefox ESR 78.7.

2

How do I fix MFSA2021-04?

To resolve the vulnerabilities outlined in MFSA2021-04, update your Firefox ESR to version 78.7 or later.

3

What are the vulnerabilities addressed in MFSA2021-04?

MFSA2021-04 addresses multiple security vulnerabilities that could potentially be exploited by attackers.

4

Is my version of Firefox ESR affected by MFSA2021-04?

If you are using a version of Firefox ESR prior to 78.7, your software is affected by the vulnerabilities in MFSA2021-04.

5

When was MFSA2021-04 released?

MFSA2021-04 was released in response to security vulnerabilities discovered in previous versions of Firefox ESR.

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.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203