CVE-2025-43468 is a vulnerability identified in Intel-based Apple macOS systems that allows a local application to access sensitive user data by exploiting a downgrade issue related to code-signing restrictions. The vulnerability arises because the system's enforcement of code-signing policies can be bypassed or weakened, enabling an app with limited privileges to gain unauthorized access to data that should be protected. This issue does not require user interaction and does not affect system integrity or availability, but it compromises confidentiality. Apple addressed this vulnerability by implementing additional code-signing restrictions in macOS Sequoia 15.7.2, Sonoma 14.8.2, and Tahoe 26.1. The CVSS vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) indicates that the attack requires local access and low complexity, with privileges, but no user interaction, and results in high confidentiality impact without affecting integrity or availability. The underlying weakness is categorized under CWE-347, which relates to improper verification of cryptographic signatures or certificates, consistent with the downgrade and code-signing bypass nature of the flaw. No public exploits have been reported, but the vulnerability poses a risk to user data confidentiality on affected systems if exploited.

The primary impact of CVE-2025-43468 is unauthorized access to sensitive user data on affected Intel-based macOS systems. This can lead to privacy breaches, exposure of personal or corporate confidential information, and potential compliance violations for organizations handling sensitive data. Since the vulnerability does not affect system integrity or availability, it does not directly enable system compromise or denial of service. However, the ability for a local app with limited privileges to bypass code-signing restrictions and access sensitive data could be leveraged as part of a broader attack chain, increasing the risk of insider threats or malware escalation. Organizations relying on Intel-based Macs for critical operations or handling sensitive information are at risk, especially if patching is delayed or if local access controls are weak. The lack of required user interaction lowers the barrier for exploitation once local access is obtained, increasing the threat level in environments where users can install or run untrusted applications.

To mitigate CVE-2025-43468, organizations should promptly apply the security updates released by Apple in macOS Sequoia 15.7.2, Sonoma 14.8.2, and Tahoe 26.1. Beyond patching, organizations should enforce strict application control policies to limit the installation and execution of untrusted or unsigned applications, reducing the risk of local exploitation. Employ endpoint protection solutions capable of detecting anomalous behavior related to code-signing bypass attempts. Implement least privilege principles to restrict user and application permissions, minimizing the potential impact of compromised or malicious local apps. Regularly audit installed applications and monitor system logs for suspicious activity indicative of code-signing or privilege escalation attempts. Educate users about the risks of installing unauthorized software and maintain robust physical security controls to prevent unauthorized local access to devices. Finally, integrate these mitigations into broader macOS security baselines and compliance frameworks to ensure ongoing protection.