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A Critical Flaw in Google Chromium V8 Engine Exposed by U.S. CISA: What You Need to Know



A critical flaw has been exposed in the Google Chromium V8 engine, allowing attackers to potentially exploit heap corruption via a crafted HTML page. U.S. CISA has added this vulnerability, tracked as CVE-2025-13223, to its Known Exploited Vulnerabilities catalog. With federal agencies ordered to fix this by December 10, 2025, and private organizations urged to take similar action, the importance of cybersecurity cannot be overstated. This is a stark reminder for all organizations to prioritize their security posture in the face of rapidly evolving cyber threats.

  • CISA has added a critical flaw in Google Chromium V8 engine, CVE-2025-13223, to its Known Exploited Vulnerabilities (KEV) catalog.
  • The vulnerability allows remote attackers to exploit heap corruption via a crafted HTML page, potentially leading to code execution, crashes, and malware infections.
  • Organizations must review their infrastructure for potential vulnerabilities and apply patches as soon as possible, with federal agencies ordered to fix the issue by December 10, 2025.



  • U.S. Cybersecurity and Infrastructure Security Agency (CISA) has taken a significant step towards enhancing the security posture of federal agencies and private organizations alike, by adding a critical flaw in Google Chromium V8 engine, tracked as CVE-2025-13223, to its Known Exploited Vulnerabilities (KEV) catalog. The exposure highlights the importance of regular vulnerability assessments and timely patching to prevent exploitation by malicious actors.

    The Google Chromium V8 engine is an open-source JavaScript and WebAssembly engine that powers applications like Google Chrome and Node.js. According to NIST's advisory, the flaw, which has been actively exploited in the wild, allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability exploits type confusion issues when software misinterprets a piece of memory as the wrong type of object.

    This type of issue can lead to serious consequences, including code execution, crashes, and even malware infections. The fact that this flaw has been actively exploited in attacks highlights the need for organizations to stay vigilant and act quickly to address vulnerabilities before they become widespread.

    Google's Threat Analysis Group (TAG) team investigated this vulnerability after it was reported by Clement Lecigne on November 12, 2025. As is common with such exploits, Google has not shared detailed information about the attacks that have been launched using this vulnerability. This lack of transparency underscores the challenge in tracking down and understanding cyberattacks that are intentionally obfuscated.

    CISA's move to add this flaw to its KEV catalog reflects its commitment to protecting the nation's critical infrastructure from cyber threats. The Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities, which guides federal agencies in addressing identified vulnerabilities, highlights the importance of prompt action.

    Federal agencies are ordered to fix this vulnerability by December 10, 2025, a deadline that underscores the gravity of the situation. For private organizations and organizations dependent on Google Chrome or Node.js applications, this adds an extra layer of urgency to review their infrastructure for any potential vulnerabilities and apply patches as soon as possible.

    In conclusion, the exposure of this critical flaw in the Google Chromium V8 engine by U.S. CISA serves as a stark reminder of the importance of prioritizing cybersecurity. Organizations must take proactive steps to assess their systems, identify vulnerabilities, and patch them promptly to prevent falling prey to such exploits. The timely awareness provided by CISA underscores the need for constant vigilance in the face of evolving cyber threats.



    Related Information:
  • https://www.ethicalhackingnews.com/articles/A-Critical-Flaw-in-Google-Chromium-V8-Engine-Exposed-by-US-CISA-What-You-Need-to-Know-ehn.shtml

  • https://securityaffairs.com/184856/hacking/u-s-cisa-adds-a-google-chromium-v8-flaw-to-its-known-exploited-vulnerabilities-catalog.html

  • https://nvd.nist.gov/vuln/detail/CVE-2025-13223

  • https://www.cvedetails.com/cve/CVE-2025-13223/


  • Published: Wed Nov 19 15:36:55 2025 by llama3.2 3B Q4_K_M













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