CVE-2025-29796 is a vulnerability classified under CWE-451, which pertains to user interface misrepresentation of critical information. This vulnerability exists in Microsoft Edge for iOS version 1.0.0.0 and allows an unauthorized attacker to conduct spoofing attacks over a network. Specifically, the flaw enables the attacker to manipulate the browser's UI to misrepresent critical information to the user, potentially misleading them into making unsafe decisions, such as entering credentials or approving transactions under false pretenses. The vulnerability is exploitable remotely without requiring any privileges or authentication, but it does require user interaction, such as clicking a crafted link or visiting a malicious website. The CVSS v3.1 base score is 4.7, indicating a medium severity level, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), and user interaction required (UI:R). The scope is changed (S:C), meaning the vulnerability can affect resources beyond the initially vulnerable component. The impact is limited to integrity (I:L), with no impact on confidentiality or availability. No known exploits have been reported in the wild as of the publication date. The vulnerability was reserved on March 11, 2025, and published on April 4, 2025. No patches or fixes have been linked yet, so users remain exposed until an update is released. This vulnerability could be leveraged in phishing campaigns or social engineering attacks to deceive users by falsifying browser UI elements such as URL bars, security indicators, or warnings, thereby increasing the risk of credential theft or fraud.

For European organizations, this vulnerability poses a moderate risk primarily to the integrity of user interactions with web content via Microsoft Edge on iOS devices. Since the attack vector is network-based and requires user interaction, it can be exploited through phishing emails, malicious websites, or compromised networks. The misrepresentation of critical UI information can lead to users being tricked into divulging sensitive information, such as login credentials or financial data, or authorizing unintended actions. This can result in account compromise, unauthorized transactions, or further infiltration into corporate networks. Sectors such as finance, government, healthcare, and critical infrastructure, which rely heavily on secure user authentication and web-based services, are particularly vulnerable. The lack of impact on confidentiality and availability reduces the risk of data leakage or service disruption directly from this vulnerability, but the indirect consequences of successful spoofing can be significant. The absence of known exploits in the wild provides a window for proactive mitigation, but the medium severity rating indicates that organizations should prioritize remediation to prevent exploitation.

1. Monitor for official Microsoft Edge for iOS updates and apply patches promptly once released to address CVE-2025-29796. 2. Implement mobile device management (MDM) policies to enforce browser update compliance across organizational iOS devices. 3. Educate users about the risks of UI spoofing attacks, emphasizing caution when interacting with unexpected links or prompts, especially in emails or messaging apps. 4. Deploy advanced email filtering and web gateway solutions that can detect and block phishing attempts and malicious URLs targeting iOS users. 5. Encourage the use of multi-factor authentication (MFA) to reduce the impact of credential compromise resulting from spoofing attacks. 6. Conduct regular security awareness training focused on identifying suspicious UI elements and verifying website authenticity. 7. Utilize endpoint protection solutions capable of detecting anomalous browser behavior or UI manipulation attempts. 8. For high-risk environments, consider restricting the use of Microsoft Edge on iOS until a patch is available or enforcing alternative browsers with no known vulnerabilities. 9. Maintain up-to-date threat intelligence feeds to stay informed about any emerging exploits targeting this vulnerability. 10. Review and enhance incident response plans to quickly address potential phishing or spoofing incidents involving mobile browsers.