CVE-2025-5063: 
vulnerability analysis and mitigation

CVE-2025-5063 is a high-severity use-after-free vulnerability discovered in the Compositing component of Google Chrome versions prior to 137.0.7151.55. The vulnerability was initially reported by an anonymous researcher on April 18, 2025, and was publicly disclosed on May 27, 2025. This security flaw affects Chrome browsers across Windows, Mac, and Linux operating systems (Chrome Release, NVD).

The vulnerability is classified as a use-after-free (CWE-416) issue in Chrome's Compositing system. According to the CVSS 3.1 scoring by CISA-ADP, it has received a base score of 8.8 (High), with a vector string of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. This indicates that the vulnerability can be exploited remotely, requires low attack complexity, needs no privileges, but does require user interaction (NVD).

The vulnerability allows a remote attacker to potentially exploit heap corruption through a specially crafted HTML page. Given its high severity rating and potential for heap corruption, successful exploitation could lead to arbitrary code execution, information disclosure, or system compromise (NVD).

Google has released version 137.0.7151.55 of Chrome for Windows, Mac, and Linux to address this vulnerability. Users are strongly advised to update their Chrome browsers to this version or later. The update is being rolled out over several days/weeks to ensure stability (Chrome Release).