REDHAT-BUG-2489214: High severity Mozilla Firefox ESR vulnerability
Published Jun 16, 2026
·Updated
Memory safety bug fixed in Firefox ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12.
Affected Software
1 affected component
Mozilla Firefox ESR=140.12
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Firefox ESRto a version that resolves this vulnerability.Fixed in 140.12
Event History
Jun 16, 2026
Data Sourced
via Red Hat·02:01 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
What is the severity of REDHAT-BUG-2489214?
The severity of REDHAT-BUG-2489214 is classified as high, with a CVSS score of 7.
2
How do I fix REDHAT-BUG-2489214?
To fix REDHAT-BUG-2489214, update to Firefox ESR version 140.12 or later.
3
What is REDHAT-BUG-2489214 about?
REDHAT-BUG-2489214 describes a memory safety bug that has been addressed in the latest Firefox ESR release.
4
When was REDHAT-BUG-2489214 published?
REDHAT-BUG-2489214 was published on June 16, 2026.
5
Which software is affected by REDHAT-BUG-2489214?
The affected software for REDHAT-BUG-2489214 is Mozilla Firefox ESR.