CVE-2025-49755 is a vulnerability classified under CWE-451 (User Interface Misrepresentation) affecting Microsoft Edge for Android version 1.0.0. This vulnerability allows an unauthorized attacker to perform UI spoofing attacks over a network, misleading users by presenting falsified or manipulated critical information within the browser interface. The flaw arises from improper validation or rendering of UI elements, enabling attackers to craft malicious network responses or web content that cause the browser to display deceptive information, such as fake security indicators or misleading URLs. The attack vector is network-based, requiring no privileges but necessitating user interaction to trigger the spoofing. The vulnerability impacts the integrity of the user interface, potentially causing users to trust malicious sites or content under false pretenses. Confidentiality and availability are not directly impacted. The CVSS v3.1 base score is 4.3 (medium severity), reflecting low complexity of attack (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). No patches or exploits are currently reported, but the vulnerability is publicly disclosed as of August 2025. This vulnerability is particularly relevant for organizations relying on Microsoft Edge on Android devices, as it could facilitate phishing or social engineering attacks by manipulating UI elements to deceive users.

For European organizations, this vulnerability poses a risk primarily to the integrity of user interactions with web content on Microsoft Edge for Android devices. Attackers could exploit this flaw to conduct phishing or social engineering campaigns by spoofing critical UI elements, potentially leading to credential theft, unauthorized transactions, or installation of malware. Sectors such as finance, government, and critical infrastructure that rely on secure mobile browsing are at heightened risk. While confidentiality and availability are not directly compromised, the trustworthiness of displayed information is undermined, which can indirectly lead to data breaches or fraud. The medium severity score indicates a moderate risk, but the widespread use of Android and Microsoft Edge in Europe increases the potential attack surface. Organizations with mobile-first workforces or BYOD policies should be particularly vigilant. The absence of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits post-disclosure.

1. Monitor Microsoft security advisories and apply official patches or updates for Microsoft Edge on Android as soon as they become available. 2. Implement mobile device management (MDM) solutions to enforce timely browser updates and restrict installation of unapproved applications. 3. Educate users about the risks of UI spoofing and train them to verify URLs and security indicators carefully before entering sensitive information. 4. Employ network-level protections such as DNS filtering and secure web gateways to block access to known malicious sites that could exploit this vulnerability. 5. Encourage the use of multi-factor authentication (MFA) to reduce the impact of credential theft resulting from spoofing attacks. 6. Conduct regular security awareness campaigns focused on mobile device security and phishing prevention. 7. Consider deploying endpoint detection and response (EDR) tools capable of monitoring suspicious browser behavior on mobile devices. 8. Limit the use of Microsoft Edge on Android in high-risk environments until patches are applied, or consider alternative browsers with timely security updates.