CVE-2025-11205 is a heap buffer overflow vulnerability located in the WebGPU implementation of Google Chrome prior to version 141.0.7390.54. WebGPU is a web standard that provides modern graphics and compute capabilities to web applications, making it a critical component for rendering complex graphics. The vulnerability arises from improper handling of heap memory within the WebGPU code, allowing a remote attacker who has already compromised the renderer process to trigger heap corruption by crafting a malicious HTML page. This heap corruption can be leveraged to execute arbitrary code, escalate privileges, or cause denial of service. The attack vector is remote and requires user interaction, such as visiting a malicious or compromised website. The vulnerability does not require prior authentication or elevated privileges, increasing its risk profile. The CVSS v3.1 score of 8.8 reflects high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. Although no public exploits have been reported yet, the potential for exploitation is significant given Chrome's dominant market share and the critical nature of WebGPU. The vulnerability was publicly disclosed on November 6, 2025, with Google releasing a patched version 141.0.7390.54 to address the issue. Organizations relying on Chrome for web access, especially those using WebGPU-enabled features, must prioritize patching to prevent exploitation.

For European organizations, this vulnerability poses a substantial risk due to the widespread use of Google Chrome across enterprises, government agencies, and critical infrastructure sectors. Exploitation could lead to remote code execution, allowing attackers to steal sensitive data, disrupt services, or establish persistent footholds within networks. Sectors such as finance, healthcare, and public administration, which handle sensitive personal and operational data, are particularly vulnerable. The requirement for user interaction means phishing or drive-by download attacks could be effective delivery methods. Given the high confidentiality, integrity, and availability impact, successful exploitation could result in data breaches, operational downtime, and reputational damage. The lack of known exploits currently provides a window for proactive mitigation, but the high severity necessitates urgent action. Additionally, the vulnerability could be leveraged in targeted attacks against high-value European targets, amplifying geopolitical risks.

1. Immediately update all Google Chrome installations to version 141.0.7390.54 or later, as this patch addresses the heap buffer overflow in WebGPU. 2. Implement strict Content Security Policies (CSP) to restrict the execution of untrusted scripts and reduce the risk of malicious HTML content triggering the vulnerability. 3. Employ network-level protections such as web filtering and sandboxing to limit exposure to malicious websites. 4. Educate users about the risks of interacting with untrusted web content and phishing attempts that could lead to exploitation. 5. Monitor browser telemetry and endpoint detection systems for unusual behavior indicative of exploitation attempts. 6. Disable or restrict WebGPU features in Chrome via enterprise policies if immediate patching is not feasible, reducing the attack surface. 7. Maintain up-to-date endpoint protection solutions capable of detecting exploitation attempts targeting browser vulnerabilities. 8. Conduct regular vulnerability assessments and penetration testing focusing on browser security to identify and remediate potential weaknesses.