MFSA2025-96: Security Vulnerabilities fixed in Thunderbird 140.6
Published Dec 9, 2025
·Updated
Security Vulnerabilities fixed in Thunderbird 140.6
Affected Software
1 affected componentFixes available
Mozilla Thunderbird<140.6
140.6
Event History
Dec 9, 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 security vulnerabilities are addressed in MFSA2025-96?
MFSA2025-96 addresses several security vulnerabilities found in Mozilla Thunderbird 140.6.
2
What versions of Thunderbird are affected by MFSA2025-96?
MFSA2025-96 affects all versions of Mozilla Thunderbird up to and including 140.6.
3
How do I remediate the vulnerabilities described in MFSA2025-96?
To remediate the vulnerabilities in MFSA2025-96, update Mozilla Thunderbird to version 140.6 or above.
4
Is it safe to use Thunderbird versions prior to 140.6 after MFSA2025-96?
It is not safe to use Thunderbird versions prior to 140.6 due to the unresolved security vulnerabilities highlighted in MFSA2025-96.
5
Where can I find more details about the vulnerabilities in MFSA2025-96?
Detailed information about the vulnerabilities can be found in the advisory for MFSA2025-96 published by Mozilla.