RHSA-2025:4443: Important: firefox security update
Important: firefox security update
Other sources
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.<br>Security Fix(es):<br><li> firefox: thunderbird: Privilege escalation in Firefox Updater (CVE-2025-2817)</li> <li> firefox: thunderbird: Unsafe attribute access during XPath parsing (CVE-2025-4087)</li> <li> firefox: thunderbird: Process isolation bypass using "javascript:" URI links in cross-origin frames (CVE-2025-4083)</li> <li> firefox: thunderbird: Memory safety bugs fixed in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10 (CVE-2025-4091)</li> <li> firefox: thunderbird: Memory safety bug fixed in Firefox ESR 128.10 and Thunderbird 128.10 (CVE-2025-4093)</li> For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
— Red Hat
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2025:4443?
The severity of RHSA-2025:4443 is rated as important.
How do I fix RHSA-2025:4443?
To fix RHSA-2025:4443, update to the firefox package version 128.10.0-1.el9_5.
Which products are affected by RHSA-2025:4443?
RHSA-2025:4443 affects Red Hat Enterprise Linux for multiple architectures including x86_64, ARM 64, Power, and IBM z Systems.
What is the main issue addressed in RHSA-2025:4443?
RHSA-2025:4443 addresses a privilege escalation vulnerability in the Firefox Updater (CVE-2025-2817).
Is user action required for RHSA-2025:4443?
Yes, user action is required to apply the security update to mitigate the vulnerability.