CVE-2024-30057 is a vulnerability classified under CWE-356, which relates to the product UI not adequately warning users about unsafe actions. Specifically, Microsoft Edge for iOS version 1.0.0.0 exhibits a spoofing vulnerability where the browser's user interface fails to alert users when they are about to perform potentially unsafe actions. This can lead to user deception, where attackers craft malicious content or links that appear legitimate but cause users to unknowingly disclose sensitive information or perform unintended actions. The vulnerability has a CVSS 3.1 base score of 5.4, indicating medium severity. The attack vector is network-based (AV:N), requiring no privileges (PR:N), but does require user interaction (UI:R). The scope is unchanged (S:U), and the impact affects confidentiality and integrity to a limited extent (C:L/I:L/A:N). No known exploits have been reported in the wild, and no patches are currently linked, suggesting that mitigation may rely on upcoming updates and user awareness. The vulnerability primarily affects Microsoft Edge on iOS devices, which are widely used in enterprise and consumer environments. The lack of UI warnings can facilitate phishing or spoofing attacks, increasing the risk of credential theft or unauthorized data access.

For European organizations, this vulnerability poses a moderate risk primarily through social engineering and phishing attacks that exploit the UI's failure to warn users of unsafe actions. Confidentiality and integrity of sensitive data could be compromised if users are tricked into submitting credentials or sensitive information to malicious sites masquerading as legitimate ones. Although availability is not impacted, the reputational damage and potential regulatory consequences under GDPR for data breaches could be significant. Organizations relying on Microsoft Edge for iOS for business communications or accessing corporate resources are at risk, especially if users are not trained to recognize spoofing attempts. The threat is heightened in sectors with high-value targets such as finance, government, and critical infrastructure, where attackers may leverage this vulnerability as part of a broader attack chain. The absence of known exploits in the wild currently limits immediate risk but does not preclude future exploitation.

1. Monitor for official Microsoft security advisories and apply patches or updates to Microsoft Edge for iOS as soon as they become available. 2. Implement targeted user awareness training focused on recognizing phishing and spoofing attempts, emphasizing caution when interacting with links or prompts in the browser. 3. Employ mobile device management (MDM) solutions to enforce security policies on iOS devices, including restricting installation of unapproved applications and controlling browser configurations. 4. Use endpoint detection and response (EDR) tools capable of monitoring browser behavior for anomalies indicative of spoofing or phishing attacks. 5. Encourage multi-factor authentication (MFA) for all sensitive applications accessed via mobile browsers to reduce the impact of credential compromise. 6. Regularly audit and review browser usage policies and ensure that users understand the risks associated with unsafe UI actions. 7. Consider deploying network-level protections such as DNS filtering and web proxies that can block access to known malicious sites.