RHSA-2025:10186 — Security Advisory

An update for firefox is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

• firefox: Content-Disposition header ignored when a file is included in an embed or object tag (CVE-2025-6430)

• firefox: Use-after-free in FontFaceSet (CVE-2025-6424)

• firefox: Incorrect parsing of URLs could have allowed embedding of youtube.com (CVE-2025-6429)

• firefox: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID (CVE-2025-6425)

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.