CVE-2025-43302 is a security vulnerability affecting multiple Apple operating systems, including macOS (Sonoma 14.8, Sequoia 15.7, Tahoe 26), iOS (18.7 and 26), iPadOS (18.7 and 26), tvOS 26, visionOS 26, and watchOS 26. The vulnerability arises from an out-of-bounds write condition due to insufficient bounds checking in the affected systems. This flaw allows a malicious application to write data outside the intended memory boundaries, potentially causing unexpected system termination (i.e., crashes or reboots). Although the vulnerability does not appear to allow arbitrary code execution or privilege escalation directly, the ability to cause system instability can be leveraged for denial-of-service (DoS) attacks or to disrupt normal device operation. The issue has been addressed by Apple through improved bounds checking in the listed OS versions. No known exploits are currently reported in the wild, and the affected versions are unspecified beyond the patched releases. The vulnerability requires an app to be installed and executed on the device, implying that some level of user interaction or app installation is necessary for exploitation. No CVSS score has been assigned yet, and no detailed technical information such as the specific component or memory region affected is provided.

For European organizations, the primary impact of CVE-2025-43302 is the potential for denial-of-service conditions on Apple devices used within corporate environments. Unexpected system termination can disrupt business operations, especially in organizations relying heavily on Apple hardware for critical workflows, such as creative industries, software development, and mobile workforce scenarios. While this vulnerability does not appear to compromise confidentiality or integrity directly, repeated or targeted exploitation could lead to operational downtime, loss of productivity, and increased support costs. In sectors where availability is critical, such as healthcare, finance, or government, even transient system crashes could have significant consequences. Additionally, the need to update multiple Apple OS versions across diverse device fleets may pose logistical challenges for IT departments, potentially delaying patch deployment and increasing exposure windows.

European organizations should prioritize deploying the Apple security updates that address this vulnerability across all affected devices. Given the broad range of Apple OS versions impacted, IT asset inventories must be updated to identify all devices running vulnerable versions. Organizations should enforce strict app installation policies, limiting app sources to trusted vendors and using Mobile Device Management (MDM) solutions to control app deployment and permissions. Monitoring for unusual app behavior or frequent system crashes can help detect attempted exploitation. Additionally, organizations should educate users about the risks of installing untrusted applications and encourage prompt installation of OS updates. For environments with critical availability requirements, consider implementing redundancy and failover mechanisms to mitigate potential disruptions caused by unexpected system terminations.