CVE-2024-4761 is an out-of-bounds write vulnerability identified in the V8 JavaScript engine component of Google Chrome prior to version 124.0.6367.207. The vulnerability arises from improper bounds checking during memory operations, allowing a remote attacker to craft a malicious HTML page that triggers an out-of-bounds write in memory. This type of vulnerability (CWE-787) can lead to memory corruption, which attackers can leverage to execute arbitrary code within the context of the browser process. Exploitation requires the victim to visit a specially crafted web page, making user interaction necessary. The vulnerability has a CVSS v3.1 score of 7.5, indicating high severity, with attack vector being network-based, requiring high attack complexity, no privileges, but user interaction is needed. The impact covers confidentiality, integrity, and availability, as arbitrary code execution can lead to data theft, system compromise, or denial of service. Although no known exploits are reported in the wild yet, the vulnerability is critical due to the ubiquity of Chrome and the potential for exploitation by attackers to gain control over affected systems. The vulnerability was publicly disclosed on May 14, 2024, and Google has released a patched version 124.0.6367.207 to address the issue. The lack of patch links in the provided data suggests users should update via official Chrome update channels. The vulnerability is particularly concerning for environments with high web exposure and users who may be targeted by phishing or drive-by download attacks.

For European organizations, the impact of CVE-2024-4761 can be significant due to the widespread use of Google Chrome across enterprises and public sectors. Successful exploitation could allow attackers to execute arbitrary code remotely, potentially leading to data breaches, espionage, ransomware deployment, or disruption of services. Organizations handling sensitive data, such as financial institutions, healthcare providers, and government agencies, are at heightened risk. The vulnerability's requirement for user interaction means phishing campaigns or malicious advertisements could be effective attack vectors. Additionally, compromised endpoints could serve as footholds for lateral movement within networks, increasing the scope of damage. Given the high confidentiality, integrity, and availability impact, failure to patch promptly could result in regulatory penalties under GDPR if personal data is compromised. The threat also poses risks to critical infrastructure sectors that rely on secure web browsing for operations and communications.

1. Immediately update all Google Chrome installations to version 124.0.6367.207 or later to apply the official patch addressing CVE-2024-4761. 2. Enforce enterprise policies that restrict browser updates to approved versions and automate patch deployment to minimize exposure. 3. Deploy web filtering and URL reputation services to block access to known malicious sites and reduce the risk of users visiting crafted pages. 4. Implement endpoint detection and response (EDR) solutions capable of identifying anomalous browser behavior indicative of exploitation attempts. 5. Conduct user awareness training focused on recognizing phishing and suspicious web content to reduce the likelihood of user interaction with malicious pages. 6. Utilize network segmentation to limit the potential lateral movement from compromised endpoints. 7. Monitor security advisories from Google and Chromium project for any updates or emerging exploit reports. 8. Consider deploying browser isolation technologies for high-risk user groups to contain potential exploitation within isolated environments.