CVE-2024-54486 is a vulnerability identified in Apple tvOS and other Apple operating systems, including iOS, macOS, watchOS, and visionOS, where processing a maliciously crafted font file can lead to the disclosure of process memory. This vulnerability arises due to insufficient validation or improper handling of font data, allowing an attacker to craft a font that, when processed by the system, leaks sensitive information from the memory space of the affected process. The vulnerability has been addressed by Apple through improved input validation and memory handling checks in the font processing components. The flaw requires an attacker to have network access and low privileges on the device but does not require user interaction, increasing the risk of remote exploitation. The CVSS v3.1 score is 6.5, indicating a medium severity level, with a vector showing network attack vector, low attack complexity, privileges required, no user interaction, and high confidentiality impact but no impact on integrity or availability. The vulnerability affects multiple Apple platforms, with patches released in versions including tvOS 18.2, iOS 18.2, macOS Sequoia 15.2, macOS Ventura 13.7.2, macOS Sonoma 14.7.2, watchOS 11.2, visionOS 2.2, and iPadOS 17.7.3 and 18.2. No known exploits have been reported in the wild as of the publication date. The vulnerability could be exploited by an attacker to leak sensitive information such as cryptographic keys, passwords, or other confidential data stored in process memory, potentially aiding further attacks or data breaches.

For European organizations, the primary impact of CVE-2024-54486 is the potential unauthorized disclosure of sensitive information residing in process memory on Apple devices, including Apple TV units used in corporate or public settings. This could lead to leakage of confidential business data, cryptographic material, or user credentials, undermining data confidentiality and possibly facilitating subsequent attacks such as privilege escalation or lateral movement. Organizations relying on Apple ecosystems for media delivery, digital signage, or internal communications may face increased risk if devices are accessible over networks by untrusted actors. Although the vulnerability does not affect system integrity or availability, the confidentiality breach could have regulatory implications under GDPR if personal data is exposed. The medium severity rating suggests a moderate risk level, but the lack of required user interaction and network attack vector means exploitation could be automated or remote, increasing exposure. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits post-disclosure.

European organizations should immediately verify that all Apple devices, particularly Apple TV units and other affected platforms (iOS, macOS, watchOS, visionOS), are updated to the latest patched versions listed by Apple (tvOS 18.2, iOS 18.2, macOS Sequoia 15.2, macOS Ventura 13.7.2, macOS Sonoma 14.7.2, watchOS 11.2, visionOS 2.2, iPadOS 17.7.3 and 18.2). Network segmentation should be employed to isolate Apple TV devices from untrusted networks and limit exposure to potential attackers. Implement strict access controls and monitor network traffic for unusual font file transfers or suspicious activity targeting Apple devices. Disable or restrict font processing features where feasible in managed environments. Employ endpoint detection and response (EDR) solutions capable of detecting anomalous memory access or font parsing behaviors. Regularly audit device configurations and ensure minimal privileges are granted to users and services interacting with font processing components. Finally, maintain up-to-date threat intelligence feeds to detect any emerging exploit attempts targeting this vulnerability.