CVE-2025-46774 is a vulnerability identified in Fortinet's FortiClient software for macOS, specifically in versions 7.4.2 and below, 7.2.9 and below, and all versions of 7.0. The root cause is an improper verification of cryptographic signatures (CWE-347) within the FortiClient installer. This flaw allows a local user with limited privileges to exploit FortiClient-related executables to escalate their privileges on the system. The vulnerability requires local access and user interaction, as indicated by the CVSS vector (AV:L/AC:H/PR:L/UI:R), meaning an attacker must have some level of access and trick a user or themselves into executing a malicious action. The scope is classified as changed (S:C), indicating that the vulnerability can affect resources beyond the initially compromised component. The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), meaning an attacker could gain full control over the system, access sensitive data, and disrupt operations. The CVSS score of 6.8 reflects a medium severity level, balancing the high impact with the complexity and requirements for exploitation. No public exploits are known at this time, but the vulnerability's nature suggests it could be leveraged in targeted attacks if local access is obtained. Fortinet has not yet published patches or mitigation details, emphasizing the need for vigilance and interim controls.

The vulnerability allows a local attacker with limited privileges to escalate their rights to higher privilege levels, potentially root or administrative access on macOS systems running vulnerable FortiClient versions. This can lead to full system compromise, unauthorized access to sensitive corporate data, disruption of security controls, and potential lateral movement within enterprise networks. Organizations relying on FortiClient for endpoint security on macOS may face increased risk of insider threats or attacks from compromised local accounts. The high impact on confidentiality, integrity, and availability means critical business operations and data could be severely affected. Although exploitation requires local access and user interaction, the widespread use of FortiClient in enterprise environments makes this a significant concern, especially in organizations with many macOS endpoints.

1. Monitor Fortinet advisories closely and apply official patches immediately once released to address CVE-2025-46774. 2. Until patches are available, restrict local user permissions on macOS endpoints to the minimum necessary, preventing unprivileged users from executing or modifying FortiClient executables. 3. Implement strict endpoint security policies, including application whitelisting and integrity monitoring, to detect unauthorized changes to FortiClient components. 4. Educate users about the risks of executing untrusted code and the importance of not bypassing security prompts, as user interaction is required for exploitation. 5. Use macOS security features such as System Integrity Protection (SIP) and full disk encryption to limit the impact of privilege escalation. 6. Conduct regular audits of local user accounts and privileges to identify and remove unnecessary access. 7. Employ network segmentation to limit the potential lateral movement from compromised macOS endpoints. 8. Consider deploying additional endpoint detection and response (EDR) tools capable of detecting anomalous privilege escalation behaviors related to FortiClient.