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CVE-2025-13223: The Chrome Vulnerability You Can’t Afford to Ignore

Heads up, Chrome users! An actively exploited zero-day vulnerability, CVE-2025-13223, has been identified in Google Chrome’s V8 JavaScript and WebAssembly engine. This vulnerability could allow attackers to execute arbitrary code or cause program crashes. Google has already released security updates to address this critical flaw, so it’s crucial to update your browser immediately.

Understanding the Vulnerability

The vulnerability, classified as CVE-2025-13223, stems from a type confusion issue within the V8 JavaScript and WebAssembly engine. Type confusion occurs when software misinterprets a memory location as the incorrect type of object. This can lead to memory corruption, program crashes, or, more seriously, the execution of malicious code. According to NIST’s National Vulnerability Database (NVD), a remote attacker could exploit heap corruption by using a specially crafted HTML page.

Root Cause

The root cause of CVE-2025-13223 is a type confusion vulnerability in the V8 JavaScript and WebAssembly engine. The Chrome V8 engine, an open-source component written in C++, is used not only by Chrome but also by other applications like Node.js. The vulnerability occurs when V8 improperly handles object types, leading to potential exploitation.

Impact & Exploit Potential

Successful exploitation of this vulnerability could have severe consequences. An attacker could leverage a crafted HTML page to trigger the type confusion, leading to arbitrary code execution within the context of the Chrome browser. This could result in the attacker gaining control of the user’s system, stealing sensitive information, or installing malware. Given the active exploitation of this flaw, the risk is high.

Tactics, Techniques, and Procedures (TTPs)

Attackers are actively exploiting this vulnerability (CVE-2025-13223) in the wild. The primary tactic observed is:

  • TA0005 – Execution: Attackers are using this vulnerability to execute malicious code on the victim’s system.

The technique employed is:

  • T1203 – Exploitation for Client Execution: By enticing users to visit a malicious HTML page, attackers can exploit the type confusion vulnerability to execute code within the Chrome browser.

Affected Products

This vulnerability affects Google Chrome versions prior to 142.0.7444.175 across Windows, macOS, and Linux platforms. Other Chromium-based browsers, including Microsoft Edge, Brave, Opera, and Vivaldi, are also potentially affected and require updates as soon as they are available.

Mitigation & Recommendations

To protect yourself from this actively exploited vulnerability, it is imperative to update your Chrome browser immediately. Follow these steps:

  • Update Chrome: Ensure your Chrome browser is updated to version 142.0.7444.175/.176 for Windows, 142.0.7444.176 for macOS, and 142.0.7444.175 for Linux.
  • Relaunch Chrome: After updating, relaunch the browser to apply the changes.
  • Check for Updates: Navigate to More > Help > About Google Chrome to check for updates and relaunch if necessary.
  • Chromium-based Browsers: If you use other Chromium-based browsers, apply the updates as soon as they are available.

Google’s Response

Google’s Threat Analysis Group (TAG) discovered and reported CVE-2025-13223 on November 12, 2025. In addition to addressing CVE-2025-13223, Google also patched another type confusion vulnerability in V8, CVE-2025-13224, which was identified by their AI agent, Big Sleep. This marks the seventh zero-day flaw fixed in Chrome this year, highlighting the ongoing challenges in browser security.

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