CVE-2024-27802 is a vulnerability classified under CWE-787 (Out-of-bounds Read) affecting Apple’s iOS, iPadOS, macOS, tvOS, and visionOS platforms. The flaw stems from improper input validation when processing specially crafted files, which can lead to an out-of-bounds read condition. This memory safety issue may cause applications to terminate unexpectedly or, more critically, allow an attacker to execute arbitrary code on the affected device. Exploitation requires the victim to interact with a malicious file, such as opening or previewing it, which could be delivered via email, messaging apps, or web downloads. The vulnerability has a CVSS v3.1 base score of 7.8, reflecting high severity with high impact on confidentiality, integrity, and availability, low attack complexity, no privileges required, and user interaction needed. Apple has released patches in iOS 16.7.8, iPadOS 16.7.8, iOS 17.5, iPadOS 17.5, macOS Monterey 12.7.5, macOS Sonoma 14.5, macOS Ventura 13.6.7, tvOS 17.5, and visionOS 1.2 to address this issue by improving input validation to prevent out-of-bounds reads. No public exploits have been reported yet, but the vulnerability’s nature and impact warrant immediate attention.

If exploited, CVE-2024-27802 can lead to arbitrary code execution, allowing attackers to run malicious code with the privileges of the targeted application, potentially escalating to broader system compromise. This threatens the confidentiality of sensitive data, integrity of system operations, and availability of applications or devices. Unexpected app termination can disrupt user productivity and service availability. Given the widespread use of Apple devices in both consumer and enterprise environments, successful exploitation could facilitate espionage, data theft, or deployment of persistent malware. The requirement for user interaction limits mass exploitation but targeted attacks remain a significant risk, especially in high-value sectors such as government, finance, healthcare, and technology. The vulnerability’s presence across multiple Apple operating systems broadens the attack surface, affecting mobile, desktop, and emerging platforms like visionOS.

Organizations and users should promptly apply the security updates released by Apple for iOS (16.7.8 and 17.5), iPadOS (16.7.8 and 17.5), macOS Monterey 12.7.5, macOS Sonoma 14.5, macOS Ventura 13.6.7, tvOS 17.5, and visionOS 1.2. Beyond patching, implement strict controls on file sources by restricting or scanning incoming files from untrusted or unknown origins, especially in email and messaging platforms. Employ endpoint protection solutions capable of detecting anomalous file processing behaviors. Educate users to avoid opening suspicious files or links and to report unexpected app crashes. Use application sandboxing and least privilege principles to limit the impact of potential exploitation. Monitor device logs for unusual app terminations or crashes that could indicate exploitation attempts. For enterprises, consider network-level filtering to block delivery of known malicious payloads targeting Apple devices.