CVE-2025-43260 is a vulnerability in Apple macOS that permits a local application to hijack entitlements assigned to other privileged applications. Entitlements in macOS are special permissions granted to apps to perform sensitive operations or access protected resources. This vulnerability stems from inadequate data protection, allowing an unprivileged app to intercept or assume entitlements intended for other trusted apps. The issue was addressed by Apple in macOS Sequoia 15.6 and Sonoma 14.7.7 through enhanced data protection mechanisms that prevent such hijacking. The CVSS v3.1 base score is 5.1, indicating a medium severity level, with an attack vector classified as local (AV:L), low attack complexity (AC:L), no privileges required (PR:N), and no user interaction needed (UI:N). The impact affects confidentiality and integrity but not availability. The weakness corresponds to CWE-266, which relates to improper privilege management. No public exploits have been reported, suggesting limited current exploitation but potential risk if weaponized. This vulnerability could be leveraged by malicious local apps to escalate privileges or access sensitive data by impersonating other privileged apps, undermining system security and trust boundaries.

The primary impact of CVE-2025-43260 is unauthorized privilege escalation on affected macOS systems. An attacker with local access can hijack entitlements granted to privileged apps, potentially gaining access to sensitive data or performing restricted operations. This compromises confidentiality and integrity of the system and data. Although availability is not affected, the breach of trust boundaries can facilitate further attacks or data exfiltration. Organizations relying on macOS for critical operations, especially those running multiple privileged apps or sensitive workloads, face increased risk of insider threats or malware exploiting this flaw. The lack of required authentication or user interaction lowers the barrier for exploitation once local access is obtained. While no known exploits exist currently, the vulnerability could be targeted in environments where attackers have foothold access, such as compromised endpoints or developer machines. This could lead to lateral movement, data breaches, or disruption of security controls.

To mitigate CVE-2025-43260, organizations should immediately update affected macOS systems to versions Sequoia 15.6, Sonoma 14.7.7, or later where the vulnerability is patched. Beyond patching, restrict local user permissions to minimize installation or execution of untrusted apps. Employ application whitelisting and endpoint protection solutions to detect and block unauthorized apps attempting to hijack entitlements. Regularly audit installed applications and their entitlements to identify anomalies. Use macOS security features such as System Integrity Protection (SIP) and Hardened Runtime to limit app capabilities. Implement strict access controls and monitoring on developer and privileged user machines, as these are high-risk targets for local exploitation. Educate users about risks of installing untrusted software. For environments requiring high security, consider isolating critical apps or using virtualization to reduce attack surface. Finally, maintain robust incident detection and response capabilities to quickly identify and remediate any exploitation attempts.