CVE-2024-38083 is a vulnerability identified in Microsoft Edge for iOS, specifically version 1.0.0.0, where the browser's user interface performs incorrect actions due to a spoofing issue. This vulnerability is categorized under CWE-449, which involves UI misrepresentation leading to user confusion or deception. The flaw allows an attacker to manipulate the UI so that when a user interacts with an element, the action performed is different from what the user expects. This can result in integrity violations, such as executing unintended commands or navigating to malicious sites, without compromising confidentiality or availability directly. The vulnerability requires no privileges to exploit but does require user interaction, such as clicking or tapping on a deceptive UI element. The CVSS v3.1 base score is 4.3 (medium severity), reflecting the moderate impact and ease of exploitation. No public exploits or active exploitation in the wild have been reported as of the publication date. The issue affects the Chromium-based Microsoft Edge browser on iOS devices, a platform with growing adoption in enterprise and consumer markets. The vulnerability highlights risks associated with UI spoofing on mobile browsers, which can facilitate phishing or social engineering attacks by misleading users about the true nature of their interactions. Microsoft has not yet published a patch link, indicating that remediation may be forthcoming. Organizations relying on Microsoft Edge for iOS should monitor for updates and prepare to deploy fixes promptly.

For European organizations, this vulnerability poses a risk primarily to the integrity of user interactions within Microsoft Edge on iOS devices. Attackers could exploit the UI spoofing flaw to trick users into performing unintended actions, such as submitting sensitive information, navigating to malicious websites, or triggering unauthorized commands. While confidentiality and availability are not directly impacted, the integrity compromise can facilitate phishing, social engineering, or fraud schemes, potentially leading to credential theft or unauthorized transactions. This is particularly concerning for sectors with high mobile workforce usage, such as finance, legal, and government agencies, where iOS devices and Microsoft Edge are in use. The absence of known exploits reduces immediate risk, but the medium severity score and the requirement for user interaction mean that targeted attacks could still be effective. The impact is amplified in environments where users are less trained to recognize UI inconsistencies or where mobile device management policies do not enforce strict app version controls. Additionally, organizations with compliance obligations around data integrity and user authentication may face regulatory scrutiny if such spoofing leads to security incidents.

1. Monitor Microsoft’s official security advisories and deploy patches or updates for Microsoft Edge on iOS immediately once available. 2. Implement mobile device management (MDM) solutions to enforce app version controls and restrict installation of unapproved or outdated browser versions. 3. Educate users about the risks of UI spoofing and train them to recognize suspicious or unexpected UI behaviors, especially when interacting with links or prompts within the browser. 4. Encourage the use of multi-factor authentication (MFA) on sensitive services accessed via mobile browsers to reduce the impact of potential spoofing-based credential theft. 5. Employ network-level protections such as DNS filtering and secure web gateways to block access to known malicious sites that could exploit this vulnerability. 6. Conduct regular security awareness campaigns focusing on mobile device security and phishing prevention. 7. Where possible, limit the use of Microsoft Edge for iOS in high-risk environments until a patch is applied, or consider alternative browsers with no known vulnerabilities. 8. Review and tighten application permissions and browser settings to minimize exposure to UI manipulation attacks.