REDHAT-BUG-2489236: 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.

  1. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 152
  2. Upgrade

    Upgrade Firefox ESR to 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-2489236?

The severity of REDHAT-BUG-2489236 is medium, rated at 4.

2

How do I fix REDHAT-BUG-2489236?

To fix REDHAT-BUG-2489236, update to Firefox version 152 or Firefox ESR version 140.12.

3

What type of vulnerability is REDHAT-BUG-2489236?

REDHAT-BUG-2489236 is classified as a memory safety bug in Mozilla Firefox.

4

When was REDHAT-BUG-2489236 published?

REDHAT-BUG-2489236 was published on June 16, 2026.

5

Which software is affected by REDHAT-BUG-2489236?

REDHAT-BUG-2489236 affects Mozilla Firefox and Mozilla Firefox ESR.

Contact

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