CVE-2025-10892 is a high-severity integer overflow vulnerability found in the V8 JavaScript engine component of Google Chrome versions prior to 140.0.7339.207. The vulnerability arises from improper handling of integer operations within V8, which can lead to an integer overflow condition. This overflow can subsequently cause heap corruption when processing crafted HTML pages containing malicious JavaScript code. Exploiting this flaw allows a remote attacker to execute arbitrary code in the context of the victim's browser without requiring any privileges or prior authentication, although user interaction is necessary to visit a malicious webpage. The vulnerability affects the core JavaScript engine, which is integral to Chrome’s rendering and script execution, making it a critical attack vector. The CVSS v3.1 base score of 8.8 reflects the high impact on confidentiality, integrity, and availability, as successful exploitation could lead to full compromise of the browser process, data leakage, or denial of service. While there are no known exploits in the wild at the time of publication, the ease of exploitation combined with the widespread use of Chrome makes this a significant threat. The vulnerability was publicly disclosed on September 24, 2025, and fixed in Chrome version 140.0.7339.207. No specific patch links were provided in the source data, but updating to the fixed version is the primary remediation step.

For European organizations, this vulnerability poses a substantial risk due to the widespread adoption of Google Chrome as the primary web browser across enterprises, government agencies, and critical infrastructure sectors. Exploitation could enable attackers to bypass browser security controls, execute arbitrary code, steal sensitive information such as authentication tokens or confidential documents, and potentially pivot to internal networks. This is particularly concerning for sectors handling sensitive personal data under GDPR regulations, financial institutions, and public sector entities. The requirement for user interaction (visiting a malicious webpage) means that phishing campaigns or malicious advertisements could be leveraged to trigger the exploit. Given the high confidentiality, integrity, and availability impact, successful exploitation could lead to data breaches, operational disruption, and reputational damage. Additionally, the vulnerability could be used as an initial foothold in multi-stage attacks targeting European organizations, increasing the overall cyber risk landscape.

European organizations should prioritize immediate patching by upgrading all Google Chrome installations to version 140.0.7339.207 or later. Given the lack of detailed patch links, organizations should rely on official Google Chrome update channels and enterprise deployment tools to ensure timely updates. Additionally, organizations should implement browser security best practices such as enabling sandboxing features, restricting JavaScript execution where possible, and employing web filtering to block access to known malicious sites. User awareness training to recognize phishing attempts and suspicious links is critical to reduce the risk of user interaction-based exploitation. Network-level protections such as intrusion detection/prevention systems (IDS/IPS) should be tuned to detect anomalous browser behaviors. For high-security environments, consider deploying endpoint detection and response (EDR) solutions capable of identifying exploitation attempts targeting browser processes. Regular vulnerability scanning and penetration testing should include checks for outdated browser versions to ensure compliance. Finally, organizations should monitor threat intelligence feeds for any emerging exploit activity related to CVE-2025-10892.