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Google Fixes Actively Exploited Sandbox Escape Zero Day in Chrome

GLOBAL INTERNET ECOSYSTEM, JUL 15 – Google's AI agent Big Sleep has discovered and fixed five actively exploited zero-day vulnerabilities in Chrome this year, enhancing browser security and protection for users worldwide.

  • Google released a security update in 2025 to fix CVE-2025-6558, a high-severity sandbox escape vulnerability actively exploited in Chrome versions before 138.0.7204.157.
  • This update followed earlier patches for multiple zero-day flaws in Chrome's V8 engine amid growing cyber threats using sophisticated AI attacks.
  • Google uses AI tools like Big Sleep and FACADE to detect vulnerabilities and anomalies, and deploys real-time scam detection systems that block up to 20 times more malicious pages.
  • Google restricts public access to detailed bug information until most users install fixes and announced Chrome 138 as the last version supporting macOS Big Sur, urging prompt updates.
  • These efforts reflect Google's commitment to integrating AI in cybersecurity, donating Secure AI Framework data to accelerate secure AI adoption and enhance global threat defenses.
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Google has released an important update for its Chrome browser. In the new Chrome versions 138.0.7204.157/158 for Windows and macOS, and 138.0.7204.157 for Linux, Google has fixed several vulnerabilities. According to Google, one of the holes is already being exploited for attacks. The makers of other Chromium-based browsers will follow suit in the coming days. In the Chrome Release Blog, Srinivas Sista lists two of the six patched security vuln…

Google has released the latest security update for the Chrome browser, which fixes several serious security flaws, including a so-called zero-day flaw that is already actively exploited.

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Neowin broke the news in on Tuesday, July 15, 2025.
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