CVE-2025-43240 in macOS
Summary
by MITRE • 07/30/2025
A logic issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.6. A download's origin may be incorrectly associated.
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Analysis
by VulDB Data Team • 08/26/2025
The vulnerability identified as CVE-2025-43240 represents a logic flaw in macOS Sequoia 15.6 that affects how download origins are tracked and associated within the operating system. This issue falls under the category of improper input validation and weak access control mechanisms as defined by CWE-250, where the system fails to properly verify or validate the source of downloaded content. The problem manifests when the system incorrectly associates the origin of a download, potentially leading to misleading information about where content was obtained from.
The technical implementation of this vulnerability stems from insufficient validation of download source metadata within the macOS security framework. When users download files, the system should maintain accurate records of the originating source to ensure proper security posture and user awareness. However, the flawed logic allows for incorrect associations between downloaded content and their actual sources, which could be exploited to bypass security controls or create confusion during security assessments. This weakness specifically impacts the integrity of the system's download tracking mechanisms and could potentially be leveraged to manipulate security decisions based on false origin information.
The operational impact of CVE-2025-43240 extends beyond simple data inconsistency, as it could enable adversaries to craft more convincing social engineering attacks or manipulate security policies that rely on accurate download origin tracking. Attackers might exploit this vulnerability to make malicious downloads appear to originate from trusted sources, thereby reducing user suspicion and increasing the likelihood of successful exploitation. The vulnerability also affects the reliability of security event logs and forensic analysis, as the recorded download origins would be inaccurate, potentially leading to incorrect security posture assessments.
Mitigation strategies for this vulnerability should focus on ensuring that all download origin tracking mechanisms are properly validated and that the system enforces strict checks on source identification. Organizations should immediately deploy macOS Sequoia 15.6 updates to address this issue, as it represents a fundamental flaw in the operating system's security architecture. Security teams should also implement additional monitoring of download activities to detect potential anomalies in origin tracking that could indicate exploitation attempts. The fix addresses the root cause by implementing improved validation checks that ensure download origins are correctly associated with their actual sources, aligning with security best practices for maintaining data integrity and system trustworthiness.
This vulnerability demonstrates the importance of proper access control and input validation in security-critical systems, as outlined in the ATT&CK framework under the T1566 technique for social engineering. The improper handling of download origins could enable attackers to manipulate user behavior and system trust relationships, making it essential for organizations to maintain up-to-date security patches and monitor for similar logic flaws in other system components. The fix implemented in macOS Sequoia 15.6 exemplifies the need for continuous security improvements and the importance of robust validation mechanisms in preventing unauthorized access or manipulation of system data.