CVE-2024-27820 is a memory corruption vulnerability in Apple’s iOS and iPadOS platforms that arises during the processing of web content. The root cause is improper memory handling, which can be exploited by an attacker to execute arbitrary code on the affected device. This vulnerability is categorized under CWE-119, indicating a classic buffer or memory handling error. Exploitation requires the victim to interact with malicious web content, such as visiting a crafted website or opening a malicious link, but does not require prior authentication, making it a remote attack vector. The vulnerability affects multiple Apple operating systems, including iOS, iPadOS, tvOS, macOS Sonoma, watchOS, Safari, and visionOS, highlighting the broad attack surface. Apple has released patches in versions iOS 16.7.8, 17.5, iPadOS 16.7.8, 17.5, and corresponding updates for other platforms to address this issue by improving memory handling. The CVSS 3.1 score of 7.5 reflects high severity due to the potential for complete compromise of confidentiality, integrity, and availability of the device. No public exploits or active exploitation have been reported yet, but the vulnerability’s nature and impact make it a critical patch priority. Attackers leveraging this flaw could gain control over the device, access sensitive data, install persistent malware, or disrupt device functionality.

For European organizations, the impact of CVE-2024-27820 is significant due to the widespread use of Apple mobile devices in both consumer and enterprise environments. Successful exploitation could lead to unauthorized access to corporate data, interception of communications, and installation of persistent malware on employee devices, potentially serving as a foothold into corporate networks. Sectors such as finance, healthcare, government, and critical infrastructure are particularly at risk because of the sensitive nature of their data and operations. The vulnerability’s ability to compromise device confidentiality, integrity, and availability could result in data breaches, operational disruptions, and reputational damage. Additionally, the requirement for user interaction means social engineering or phishing campaigns could be used to lure victims to malicious web content. Given the integration of Apple devices in mobile workforces and remote work scenarios, the threat extends beyond traditional office environments, increasing the attack surface. The lack of known exploits in the wild currently provides a window for proactive mitigation before widespread attacks occur.

European organizations should prioritize immediate deployment of the security updates released by Apple for iOS, iPadOS, and other affected platforms, specifically versions 16.7.8, 17.5, and equivalents for other OSes. Beyond patching, organizations should implement network-level protections such as web filtering and DNS filtering to block access to known malicious sites and reduce exposure to crafted web content. Employing mobile device management (MDM) solutions can enforce update policies and restrict installation of untrusted applications or profiles. User awareness training should emphasize the risks of interacting with unsolicited links or unknown websites, reducing the likelihood of successful social engineering. Additionally, organizations can configure browsers and apps to disable or limit JavaScript and other web content features that could trigger exploitation. Monitoring device logs and network traffic for unusual activity post-update can help detect attempted exploitation. For high-security environments, consider isolating critical Apple devices or restricting their web access to trusted domains only. Regular vulnerability scanning and compliance checks should verify patch status and configuration adherence.