REDHAT-BUG-2489234: Medium severity Mozilla Firefox vulnerability
Published Jun 16, 2026
·Updated
Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12.
Affected Software
2 affected components
Mozilla Firefox=152
Mozilla Firefox ESR=140.12
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Firefoxto a version that resolves this vulnerability.Fixed in 152 - Upgrade
Upgrade
Firefox ESRto a version that resolves this vulnerability.Fixed in 140.12
Event History
Jun 16, 2026
Data Sourced
via Red Hat·02:02 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
What is the severity of REDHAT-BUG-2489234?
The severity of REDHAT-BUG-2489234 is medium with a score of 4.
2
How do I fix REDHAT-BUG-2489234?
To fix REDHAT-BUG-2489234, update to Mozilla Firefox version 152 or Mozilla Firefox ESR version 140.12.
3
What type of vulnerability is REDHAT-BUG-2489234?
REDHAT-BUG-2489234 is a memory safety bug.
4
Which software products are affected by REDHAT-BUG-2489234?
REDHAT-BUG-2489234 affects Mozilla Firefox and Mozilla Firefox ESR.
5
When was REDHAT-BUG-2489234 published?
REDHAT-BUG-2489234 was published on June 16, 2026.