MFSA2026-14: Security Vulnerabilities fixed in Firefox ESR 115.33
Published Feb 24, 2026
·Updated
Security Vulnerabilities fixed in Firefox ESR 115.33
Affected Software
1 affected componentFixes available
Mozilla Firefox ESR<115.33
115.33
Event History
Feb 24, 2026
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 MFSA2026-14?
MFSA2026-14 addresses multiple security vulnerabilities found in Firefox ESR 115.33.
2
What versions of Firefox are affected by MFSA2026-14?
Firefox ESR versions up to and including 115.33 are affected by MFSA2026-14.
3
How do I fix the vulnerabilities mentioned in MFSA2026-14?
To fix the vulnerabilities in MFSA2026-14, update Firefox ESR to version 115.34 or later.
4
What should I do if I cannot update my Firefox ESR due to compatibility issues with MFSA2026-14?
If you cannot update Firefox ESR due to compatibility issues, consider seeking alternative solutions or contacting your IT support team.
5
When was MFSA2026-14 released?
MFSA2026-14 was released as part of the security updates for Firefox ESR 115.33.