CVE-2025-10585: 
vulnerability analysis and mitigation

Type confusion vulnerability (CVE-2025-10585) was discovered in Google Chrome's V8 JavaScript and WebAssembly engine prior to version 140.0.7339.185. The vulnerability was reported by Google's Threat Analysis Group (TAG) on September 16, 2025, and was confirmed to be actively exploited in the wild. This high-severity security flaw allows remote attackers to potentially exploit heap corruption through a crafted HTML page (Chrome Release Notes, Hacker News).

The vulnerability is classified as a type confusion issue (CWE-843) in the V8 engine. Type confusion occurs when software misinterprets a piece of memory as the wrong type of object, which can lead to memory corruption, program crashes, or arbitrary code execution. The vulnerability received a CVSS v3.1 base score of 9.8 (CRITICAL) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating its severe impact and easy exploitability (Security Affairs).

The vulnerability can lead to heap corruption and potential arbitrary code execution when exploited successfully. As a critical security flaw in the V8 engine, it affects all Chrome users across Windows, macOS, and Linux platforms. This is particularly concerning as it represents the sixth zero-day vulnerability actively exploited in Chrome during 2025 (Hacker News).

Google has released patches in Chrome version 140.0.7339.185/.186 for Windows and macOS, and version 140.0.7339.185 for Linux. Users are strongly advised to update their browsers immediately by navigating to More > Help > About Google Chrome and selecting Relaunch. Users of other Chromium-based browsers should also apply updates as they become available (Hacker News).