CVE-2025-30442 is a vulnerability in Apple macOS that allows an application with limited privileges to escalate its privileges due to improper input sanitization (CWE-20). This flaw exists in macOS versions prior to Sequoia 15.4, Sonoma 14.7.6, and Ventura 13.7.6, where Apple has implemented fixes by improving input validation mechanisms. The vulnerability can be exploited locally by an attacker who already has some level of access (low privileges) to the system, without requiring user interaction. The CVSS 3.1 base score of 7.8 indicates a high severity, with the vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H meaning the attack requires local access, low attack complexity, low privileges, no user interaction, and impacts confidentiality, integrity, and availability at a high level. This vulnerability could allow an attacker to execute arbitrary code or commands with elevated privileges, potentially leading to full system compromise. Although no exploits are currently known in the wild, the nature of the vulnerability and the widespread use of macOS in enterprise and personal environments make it a critical issue to address. The flaw stems from insufficient input sanitization, which could be exploited by malicious apps to bypass security controls and escalate privileges.

The impact of CVE-2025-30442 is significant for organizations worldwide that use affected macOS versions. Successful exploitation allows an attacker with limited local access to gain elevated privileges, potentially leading to full system compromise. This can result in unauthorized access to sensitive data, modification or deletion of critical files, installation of persistent malware, and disruption of system availability. For enterprises, this could mean data breaches, loss of intellectual property, and operational downtime. The vulnerability also poses risks to individual users who could have their personal data exposed or devices hijacked. Since the attack requires local access but no user interaction, insider threats or malware already present on the system could leverage this flaw to escalate privileges and evade detection. The absence of known exploits in the wild currently reduces immediate risk, but the high severity score and ease of exploitation make timely patching essential to prevent future attacks.

Organizations should immediately apply the security updates provided by Apple in macOS Sequoia 15.4, Sonoma 14.7.6, and Ventura 13.7.6 to remediate this vulnerability. Beyond patching, organizations should implement strict application whitelisting and endpoint protection to prevent untrusted or malicious apps from executing. Employing least privilege principles to limit user and application permissions can reduce the attack surface. Monitoring for unusual local privilege escalation attempts and auditing system logs can help detect exploitation attempts early. Network segmentation and restricting local access to critical systems can further mitigate risk. Additionally, educating users about the risks of installing untrusted software and maintaining up-to-date backups will aid in recovery if compromise occurs. Organizations should also review and harden input validation mechanisms in custom or third-party macOS applications to prevent similar issues.