CVE-2026-20985 is a vulnerability identified in the Samsung Members mobile application, affecting versions prior to 5.6.00.11. The root cause is improper input validation (CWE-20), which allows remote attackers to supply arbitrary URLs that the app processes without sufficient sanitization. This flaw enables attackers to connect to arbitrary URLs and launch arbitrary activities within the Samsung Members app context, effectively leveraging the app's privileges. The attack vector is network-based (AV:N), requires no privileges (PR:N), and no authentication (AT:N), but does require user interaction (UI:A) to trigger the exploit. The vulnerability impacts confidentiality and integrity by potentially allowing unauthorized data access or manipulation through the app's privileged activities. The CVSS v4.0 score of 7.0 reflects a high severity level, indicating significant risk. No known exploits have been reported in the wild as of the publication date. The vulnerability is particularly concerning because Samsung Members is a pre-installed app on many Samsung devices, widely used for device management and support, making it a valuable target for attackers. The lack of patch links suggests that users should monitor Samsung's official channels for updates or security advisories. The vulnerability's exploitation could lead to unauthorized actions on affected devices, potentially compromising user data or device integrity.

For European organizations, this vulnerability poses a significant risk due to the widespread use of Samsung mobile devices in corporate environments. Exploitation could allow attackers to perform unauthorized actions within the Samsung Members app, potentially leading to data leakage, unauthorized access to device features, or manipulation of device settings. This could undermine device security and user privacy, impacting confidentiality and integrity of organizational data accessed or stored on these devices. The requirement for user interaction means phishing or social engineering campaigns could be used to trigger the exploit, increasing the attack surface. Given the high CVSS score and the app's privileged status, successful exploitation could facilitate lateral movement or persistence within corporate mobile environments. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits over time. Organizations relying on Samsung devices should consider this vulnerability in their mobile device management and security policies.

1. Immediately update the Samsung Members app to version 5.6.00.11 or later once available to ensure the vulnerability is patched. 2. Implement mobile device management (MDM) policies to restrict installation of untrusted apps and control app permissions, limiting Samsung Members app privileges where possible. 3. Educate users on the risks of interacting with unsolicited links or messages that could trigger the vulnerability, emphasizing caution with URLs received via email, SMS, or messaging apps. 4. Monitor network traffic for unusual connections initiated by Samsung Members or related processes to detect potential exploitation attempts. 5. Employ endpoint detection and response (EDR) solutions capable of monitoring mobile device behavior for anomalies. 6. Coordinate with Samsung support channels to receive timely security updates and advisories. 7. Consider restricting or disabling Samsung Members app usage on corporate devices if feasible until patched. 8. Conduct regular security awareness training focusing on social engineering tactics that could lead to user interaction exploitation.