MFSA2025-85: Security Vulnerabilities fixed in Thunderbird 140.4
Published Oct 14, 2025
·Updated
Security Vulnerabilities fixed in Thunderbird 140.4
Affected Software
1 affected componentFixes available
Mozilla Thunderbird<140.4
140.4
Event History
Oct 14, 2025
Advisory Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
1
What is the severity of MFSA2025-85?
The severity of MFSA2025-85 is rated as high due to potential security vulnerabilities in Thunderbird 140.4.
2
How do I fix MFSA2025-85?
To fix MFSA2025-85, update your Mozilla Thunderbird to version 140.4 or later.
3
What vulnerabilities are addressed in MFSA2025-85?
MFSA2025-85 addresses multiple security vulnerabilities that could compromise user data in Thunderbird.
4
Which versions of Thunderbird are affected by MFSA2025-85?
Versions of Thunderbird prior to 140.4 are affected by the vulnerabilities detailed in MFSA2025-85.
5
Is there a known exploit for MFSA2025-85?
While specific exploits may not be publicly documented, the vulnerabilities in MFSA2025-85 could potentially be exploited by attackers.