CVE-2024-11920 is a vulnerability identified in the Dawn component of Google Chrome on Mac platforms prior to version 130.0.6723.92. The flaw arises from an inappropriate implementation that permits out-of-bounds memory access when processing specially crafted HTML content. This vulnerability is classified under CWE-125 (Out-of-bounds Read) and CWE-787 (Out-of-bounds Write), indicating that the attacker can cause the browser to read or write memory outside the intended buffer boundaries. Such memory corruption can lead to application crashes or potentially enable further exploitation, such as arbitrary code execution, although no direct confidentiality or integrity impact is reported. The attack vector is remote and requires no privileges or authentication, but user interaction is necessary, typically by visiting a malicious webpage. The CVSS v3.1 base score is 4.3 (medium severity), reflecting the limited impact on confidentiality and integrity but acknowledging the availability impact due to potential crashes or instability. No public exploits or active exploitation in the wild have been reported to date. The vulnerability affects Mac users running vulnerable Chrome versions, emphasizing the need for timely updates. The absence of a patch link suggests that users should monitor official Google Chrome updates for the fix. This vulnerability highlights the ongoing risks associated with memory safety in complex browser components.

For European organizations, the primary impact of CVE-2024-11920 is the potential disruption of services due to browser crashes or instability on Mac devices running affected Chrome versions. While the vulnerability does not directly compromise data confidentiality or integrity, denial of service conditions could affect user productivity and availability of web-based applications. Organizations with a significant Mac user base, especially in sectors relying heavily on web applications (e.g., finance, media, technology), may experience operational interruptions. Additionally, although no known exploits exist currently, the memory corruption nature of the flaw could be leveraged in future sophisticated attacks, increasing risk over time. The vulnerability also poses a reputational risk if exploited in targeted attacks against European entities. Given the remote attack vector and lack of required privileges, the threat surface is broad, emphasizing the importance of proactive mitigation. The impact is somewhat mitigated by the requirement for user interaction, but phishing or malicious web content campaigns could facilitate exploitation.

European organizations should implement a multi-layered mitigation strategy beyond generic patching advice: 1) Immediately verify and update all Google Chrome installations on Mac devices to version 130.0.6723.92 or later once the patch is officially released. 2) Employ endpoint management solutions to enforce browser update policies and prevent use of outdated versions. 3) Use web filtering and URL reputation services to block access to known malicious or suspicious websites that could host crafted HTML exploits. 4) Educate users about the risks of interacting with untrusted web content and phishing attempts, emphasizing cautious browsing behavior. 5) Monitor browser crash logs and endpoint telemetry for unusual patterns that may indicate exploitation attempts. 6) Consider deploying application sandboxing or isolation techniques for browsers to limit the impact of potential memory corruption. 7) Coordinate with IT security teams to integrate vulnerability scanning and asset inventory focusing on Mac devices and Chrome versions. 8) Stay informed via official Google security advisories and threat intelligence feeds for updates on exploit developments or patches. These targeted actions will reduce exposure and improve resilience against this specific vulnerability.