CVE-2025-30464 is a vulnerability identified in Apple macOS that involves an out-of-bounds write condition due to inadequate bounds checking in kernel memory operations. This flaw allows a malicious application, running with no privileges but requiring user interaction, to write data beyond the allocated buffer boundaries. Such out-of-bounds writes can corrupt kernel memory, leading to system instability, unexpected termination (kernel panics), or potentially arbitrary code execution within the kernel context. The vulnerability affects multiple macOS versions prior to the patched releases: macOS Sequoia 15.4, macOS Sonoma 14.7.5, and macOS Ventura 13.7.5. The weakness is categorized under CWE-787 (Out-of-bounds Write), a common and dangerous class of memory corruption bugs. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with an attack vector requiring local access (AV:L), low attack complexity (AC:L), no privileges (PR:N), but user interaction (UI:R). Although no active exploits have been reported, the vulnerability poses a significant risk due to the critical nature of kernel memory corruption and the potential for privilege escalation or denial of service. The patch addresses the issue by implementing improved bounds checking to prevent out-of-bounds memory writes.

The vulnerability can have severe consequences for organizations relying on macOS systems. Successful exploitation can lead to kernel memory corruption, which may allow attackers to execute arbitrary code with kernel privileges, escalate privileges, or cause system crashes resulting in denial of service. This compromises system confidentiality, integrity, and availability. For enterprises, this could mean unauthorized access to sensitive data, disruption of critical services, and potential lateral movement within networks. The requirement for local access and user interaction limits remote exploitation but does not eliminate risk, especially in environments where users may run untrusted applications or be subject to social engineering. The impact is particularly critical for organizations in sectors such as finance, government, healthcare, and technology, where macOS devices are used and system stability and security are paramount.

Organizations should immediately apply the security updates provided in macOS Sequoia 15.4, Sonoma 14.7.5, and Ventura 13.7.5 to remediate this vulnerability. Beyond patching, organizations should enforce strict application whitelisting policies to prevent installation or execution of untrusted or unsigned applications. Employ endpoint protection solutions capable of detecting anomalous behavior indicative of exploitation attempts. Educate users about the risks of running untrusted software and the importance of avoiding suspicious links or downloads that could trigger exploitation. Implement least privilege principles to limit user capabilities and reduce the attack surface. Regularly audit and monitor macOS systems for unusual kernel activity or crashes that could indicate attempted exploitation. For high-security environments, consider network segmentation to isolate macOS devices and reduce exposure to local threat actors.