CVE-2025-43304 is a race condition vulnerability identified in Apple macOS that allows a local application to escalate its privileges to root. The root cause is improper state handling during certain operations, which can be exploited by a race condition (CWE-362). This flaw enables an attacker with limited privileges (low privileges) to gain full administrative control over the system without requiring user interaction. The vulnerability affects macOS versions prior to Sequoia 15.7, Sonoma 14.8, and Tahoe 26, where Apple has implemented improved state handling to mitigate the issue. The CVSS v3.1 score is 7.0, indicating high severity, with an attack vector of local (AV:L), requiring high attack complexity (AC:H), low privileges (PR:L), no user interaction (UI:N), and impacts on confidentiality, integrity, and availability (C:H/I:H/A:H). Although no known exploits have been reported in the wild, the potential for full system compromise makes this a critical concern for macOS users. The vulnerability is particularly dangerous because gaining root privileges can allow attackers to bypass security controls, install persistent malware, and access sensitive data. The race condition nature means timing attacks or concurrent process manipulation is required, increasing exploitation difficulty but not eliminating risk. This vulnerability underscores the importance of timely patching and robust local access controls on macOS systems.

If exploited, this vulnerability allows an attacker with local access and low privileges to escalate to root, effectively gaining full control over the affected macOS system. This can lead to unauthorized access to sensitive data, installation of persistent malware, disabling of security mechanisms, and disruption of system availability. Organizations relying on macOS for critical operations, development, or sensitive data processing could face severe confidentiality breaches, data integrity violations, and operational downtime. The high severity rating reflects the broad impact on confidentiality, integrity, and availability. Although exploitation requires local access and high complexity, insider threats or malware that gains initial foothold could leverage this flaw to deepen system compromise. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits post-disclosure. Enterprises with macOS endpoints should consider this a significant risk, particularly in environments where multiple users share systems or where endpoint security is critical.

1. Apply the official patches released by Apple for macOS Sequoia 15.7, Sonoma 14.8, and Tahoe 26 immediately to remediate the vulnerability. 2. Restrict local access to macOS systems to trusted users only, minimizing the risk of local exploitation. 3. Implement strict endpoint security controls, including application whitelisting and behavior monitoring, to detect and prevent unauthorized privilege escalation attempts. 4. Use macOS security features such as System Integrity Protection (SIP) and Full Disk Encryption to limit the impact of potential compromises. 5. Regularly audit user privileges and remove unnecessary local accounts or reduce their permissions. 6. Monitor system logs for unusual activity indicative of race condition exploitation or privilege escalation attempts. 7. Educate users about the risks of running untrusted applications locally, as local code execution is a prerequisite for exploitation. 8. Consider deploying endpoint detection and response (EDR) solutions capable of identifying suspicious race condition exploitation techniques. These targeted measures go beyond generic advice by focusing on local access control, patch management, and proactive detection tailored to the nature of this vulnerability.