RHSA-2025:4751: 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-2025:4751?
The severity of RHSA-2025:4751 is classified as important due to a privilege escalation vulnerability in Firefox Updater.
How do I fix RHSA-2025:4751?
You can fix RHSA-2025:4751 by updating to the recommended package version 128.10.0-1.el7_9 for Firefox.
What vulnerabilities are addressed in RHSA-2025:4751?
RHSA-2025:4751 addresses a privilege escalation vulnerability in the Firefox Updater, identified as CVE-2025-2817.
Which software is affected by RHSA-2025:4751?
RHSA-2025:4751 affects various versions of Red Hat Enterprise Linux Server and the Firefox package.
When was RHSA-2025:4751 released?
RHSA-2025:4751 was released to address critical security vulnerabilities in Firefox.