MFSA2025-21: Security Vulnerabilities fixed in Firefox ESR 115.22
Published Apr 1, 2025
·Updated
Security Vulnerabilities fixed in Firefox ESR 115.22
Affected Software
1 affected componentFixes available
Mozilla Firefox ESR<115.22
115.22
Event History
Apr 1, 2025
Advisory Published
via Mozilla·12:00 AM
Frequently Asked Questions
1
What is the severity of MFSA2025-21?
MFSA2025-21 addresses critical security vulnerabilities that could enable arbitrary code execution and other serious exploits.
2
How do I fix MFSA2025-21?
To fix MFSA2025-21, update Firefox ESR to version 115.22 or later.
3
What versions of Firefox ESR are affected by MFSA2025-21?
Firefox ESR versions up to and including 115.21 are affected by MFSA2025-21.
4
Are there any known exploits for MFSA2025-21?
Yes, there are reports of active exploits in the wild for the vulnerabilities addressed in MFSA2025-21.
5
What components of Firefox ESR does MFSA2025-21 impact?
MFSA2025-21 impacts multiple components of Firefox ESR, including the rendering engine and various browser features.