CVE-2025-8576: 
vulnerability analysis and mitigation

A Use-after-free vulnerability (CVE-2025-8576) was discovered in Google Chrome's Extensions component affecting versions prior to 139.0.7258.66. The vulnerability was reported by security researcher 'asnine' on April 30, 2025, and was publicly disclosed on August 5, 2025. This security flaw affects Chrome browsers across Windows, Mac, and Linux operating systems (Chrome Release Notes).

The vulnerability is classified as a Use-After-Free (CWE-416) issue within Chrome's Extensions functionality. It received a CVSS v3.1 Base Score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating a serious security risk. The vulnerability allows potential heap corruption exploitation through a crafted Chrome Extension (NVD).

The vulnerability could allow remote attackers to exploit heap corruption through specially crafted Chrome Extensions, potentially leading to arbitrary code execution. Given the CVSS score of 8.8, this indicates high potential impact across confidentiality, integrity, and availability (CISA-ADP).

Google has released version 139.0.7258.66 of Chrome to address this vulnerability. Users and administrators are advised to update to this version or later. The fix has been incorporated into various distribution channels, including Debian's security updates which released version 139.0.7258.127-1 (Debian Tracker).