CVE-2025-24121 in macOS
Summary
by MITRE • 01/28/2025
A logic issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.3, macOS Sonoma 14.7.3, macOS Ventura 13.7.3. An app may be able to modify protected parts of the file system.
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Analysis
by VulDB Data Team • 04/08/2026
This vulnerability represents a logic flaw in apple's operating system that allows applications to potentially modify protected file system components. The issue stems from insufficient validation mechanisms that should have prevented unauthorized access to critical system directories and files. The flaw exists in the underlying file system access controls and permission enforcement mechanisms that govern how applications interact with system-protected resources. When properly addressed, these improved checks ensure that only authorized processes can modify protected portions of the file system, maintaining the integrity of the operating system's core components and preventing unauthorized modifications that could compromise system stability and security.
The technical nature of this vulnerability aligns with common weakness enumerations such as cwe-284, which describes improper access control mechanisms, and cwe-250, which addresses execution with unnecessary privileges. The flaw operates at the kernel level where file system access controls are enforced, making it particularly dangerous as it could allow malicious applications to escalate their privileges and gain unauthorized access to system-critical resources. Attackers could exploit this logic issue to modify system files, install malicious components, or corrupt essential operating system data that would normally be protected from modification by regular applications. This represents a significant concern for both enterprise and consumer environments where unauthorized modifications could lead to complete system compromise or data loss.
The operational impact of this vulnerability extends beyond simple file system modifications to encompass broader security implications for the entire operating system ecosystem. Systems running affected versions of macos could experience unauthorized modifications to system libraries, configuration files, or boot components that would normally require administrator privileges or system-level access. This could result in system instability, performance degradation, or complete system compromise depending on the specific files modified. The vulnerability affects multiple operating system versions including macos sequoia 15.3, macos sonoma 14.7.3, and macos ventura 13.7.3, indicating that the issue spans across several major releases and requires comprehensive patching across the entire macos ecosystem. Organizations should prioritize immediate deployment of the available security updates to prevent potential exploitation.
Mitigation strategies should focus on immediate patch deployment across all affected macos systems to ensure that the improved access controls are properly implemented. Security teams should monitor for any suspicious file system modifications or unauthorized application behavior that could indicate exploitation attempts. System administrators should implement additional monitoring controls to detect unauthorized modifications to system-critical files and directories. The fix implemented by apple addresses the root cause through enhanced validation checks that properly enforce file system access controls and prevent applications from bypassing normal permission mechanisms. Organizations should also consider implementing application whitelisting policies and additional security controls to limit the potential impact of any remaining vulnerabilities. This vulnerability demonstrates the critical importance of proper access control implementation and the need for continuous security validation of system components. The remediation process should include thorough testing of system functionality after patch deployment to ensure that legitimate system operations continue to function correctly while unauthorized modifications are properly prevented.