Chrome Type Confusion Zero-Day vulnerability:

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Chrome Type Confusion Zero-Day vulnerability

What Happened

  • Google released an emergency security update for Chrome to patch a zero-day vulnerability actively exploited in the wild.
  • The flaw is tracked as CVE-2025-13223, rated High severity (CVSS 8.8), and affects the V8 JavaScript and WebAssembly engine used by Chrome and other Chromium-based browsers (Edge, Brave, Opera, Vivaldi). [thehackernews.com], [bleepingcomputer.com], [gbhackers.com]

Nature of the Vulnerability

  • Type Confusion occurs when the browser misinterprets an object’s type, leading to memory corruption.
  • Attackers can exploit this via a crafted HTML page, potentially achieving:

Active Exploitation

  • Google confirmed that an exploit for CVE-2025-13223 exists in the wild.
  • Evidence suggests commercial spyware vendors or nation-state actors may be behind the attacks, targeting high-risk individuals like journalists and activists. [securityweek.com], [bleepingcomputer.com]

Additional Vulnerability

  • Another Type Confusion flaw, CVE-2025-13224, was also patched. It was discovered by Google’s AI fuzzing system Big Sleep, but there’s no evidence of exploitation yet. [thehackernews.com], [theregister.com]

Affected Versions & Fix

  • Vulnerable: Chrome prior to 142.0.7444.175
  • Fixed versions:
  • Update manually:
    Menu → Help → About Google Chrome → Relaunch
    (or let Chrome auto-update). [bitdefender.com]

Why It Matters

  • This is the 7th Chrome zero-day in 2025, and the 3rd Type Confusion exploit in V8 this year.
  • V8 is widely used, so the blast radius includes Chromium-based browsers and even Node.js environments. [computerworld.com], [securityaffairs.com]
Remember to update. 

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