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How Does the Latest Chrome Security Update Protect Your Browser?
On December 2, 2025, Google released Chrome version 143.0.7499.40/41 across multiple platforms to patch several security vulnerabilities. This update affects Windows, macOS, Linux, iOS, and Android versions of the browser.
Security Patches Across Platforms
The update rolls out different version numbers depending on your device. Windows and macOS users receive version 143.0.7499.40 or 41, while Linux systems get version 143.0.7499.40. Mobile users see Chrome updated to version 143.0.7499.92 on iOS and 143.0.7499.52 on Android. The Extended Stable Channel also receives corresponding security fixes.
Critical Vulnerabilities Patched
Google addressed 13 security issues in this release, with severity levels ranging from high to low. The most serious vulnerabilities include:
High-Priority Fixes
- CVE-2025-13630: Type Confusion vulnerability in V8 JavaScript engine (rewarded $11,000)
- CVE-2025-13631: Security flaw in Google Updater implementation (rewarded $3,000)
- CVE-2025-13632: DevTools implementation weakness
- CVE-2025-13633: Memory management issue in Digital Credentials
Medium-Risk Patches
- CVE-2025-13634: Downloads functionality security gap
- CVE-2025-13720: Type casting error in Loader
- CVE-2025-13721: Race condition in V8 engine
Low-Severity Updates
The remaining six vulnerabilities affect Downloads, Split View, Media Stream, WebRTC, and Password management features. These issues carry lower risk but still warrant attention.
How This Update Protects You
Type confusion vulnerabilities in V8 pose significant risks since they affect how Chrome processes JavaScript code. When exploited, attackers could potentially execute malicious code through crafted web pages. The use-after-free vulnerabilities allow memory manipulation that could compromise browser security.
Inappropriate implementations in features like Downloads and DevTools create attack surfaces where malicious actors might bypass security controls. By addressing these flaws, Google reduces the likelihood of successful exploits targeting Chrome users.
Update Process
Chrome typically updates automatically through its built-in update mechanism. The browser checks for updates periodically and installs them during restart. You can manually verify your browser version by accessing the menu and selecting “About Google Chrome.” This action triggers an immediate update check.
Microsoft Edge users benefit from these fixes as well, since Edge shares Chromium’s codebase. The browser applies similar security patches through its own update channel.
Additional Security Improvements
Beyond the documented vulnerabilities, this release includes fixes from Google’s internal security audits and fuzzing initiatives. These proactive measures identify potential issues before external researchers discover them. The security team continuously tests Chrome’s components to strengthen defenses against emerging threats.