CVE-2025-43527: 
macOS vulnerability analysis and mitigation

CVE-2025-43527 is a permissions issue in the StorageKit component of Apple macOS that allows a locally installed app to gain root privileges. The vulnerability was disclosed on December 12, 2025, and affects macOS Sequoia versions prior to 15.7.3, as well as macOS Tahoe prior to 26.2. It was reported by an anonymous researcher and carries a CVSS v3.1 base score of 7.8 (High), as assessed by CISA-ADP (Apple Advisory 15.7.3, Apple Advisory Tahoe 26.2).

The vulnerability is classified as CWE-280 (Improper Handling of Insufficient Permissions or Privileges) and resides in the StorageKit framework on macOS. The root cause is a permissions misconfiguration that was addressed by Apple with additional restrictions. Exploitation requires local access with low privileges and no user interaction, allowing a malicious app to escalate its privileges to root. No public technical write-up or proof-of-concept code has been identified at this time (Apple Advisory 15.7.3, Apple Advisory Tahoe 26.2).

Successful exploitation allows a malicious application to gain root (superuser) privileges on the affected macOS system, resulting in high confidentiality, integrity, and availability impact. An attacker with root access could read or modify any file on the system, install persistent malware, disable security controls, or pivot to other systems on the network. The scope is limited to the local machine, but the privilege escalation to root represents a complete compromise of the affected host (Apple Advisory 15.7.3).

Apple has released patches addressing this vulnerability in macOS Sequoia 15.7.3 (released December 12, 2025) and macOS Tahoe 26.2. Users and administrators should update affected macOS systems to these versions or later as soon as possible. No configuration-based workarounds have been published by Apple. Organizations should also review and restrict the installation of untrusted third-party applications as a defense-in-depth measure (Apple Advisory 15.7.3, Apple Advisory Tahoe 26.2).

The CIS (Center for Internet Security) published an advisory noting multiple vulnerabilities in Apple products patched in this release cycle, including CVE-2025-43527, flagging the potential for arbitrary code execution and privilege escalation (CIS Advisory). Community reaction has been limited given the lack of public exploit code and the local-only attack vector. No notable researcher commentary or significant media coverage specific to this CVE has been identified.