CVE-2025-58484 is a vulnerability classified under CWE-276 (Incorrect Default Permissions) affecting Samsung Cloud Assistant, a component used on Samsung mobile devices to facilitate cloud synchronization and management. The vulnerability arises from the application setting overly permissive default file or resource permissions within its sandbox environment prior to version 8.0.03.8. This misconfiguration allows a local attacker—someone with physical or logical access to the device—to read partial data stored by the Samsung Cloud Assistant that should otherwise be protected. The vulnerability does not require any privileges (PR:N) or user interaction (UI:N), and the attack vector is local (AV:L), meaning remote exploitation is not feasible. The impact is limited to confidentiality (C:L), with no impact on integrity or availability. The CVSS v3.1 base score is 4.0, reflecting a medium severity level. No known exploits have been reported in the wild, and no official patches have been linked yet, though the vendor has reserved the CVE and presumably will release a fix. The vulnerability could be exploited by malicious apps or users who gain local access, potentially exposing sensitive user data stored or cached by the Samsung Cloud Assistant. This flaw highlights the importance of secure default permission settings in mobile applications handling cloud data synchronization.

For European organizations, the primary impact of CVE-2025-58484 is the potential leakage of sensitive data stored within Samsung Cloud Assistant's sandbox on affected devices. This could include partial user data synchronized with Samsung Cloud services, which may contain personal or corporate information. The confidentiality breach could lead to privacy violations, regulatory non-compliance (e.g., GDPR), and potential reputational damage. Since exploitation requires local access, the risk is higher in environments where devices are shared, lost, or susceptible to local malware infections. Organizations with mobile workforces relying on Samsung devices for cloud synchronization are at risk of data exposure if devices are compromised. However, the lack of integrity or availability impact limits the threat to data confidentiality only. The absence of known exploits reduces immediate risk, but the vulnerability should be addressed proactively to prevent future exploitation. The medium severity indicates moderate urgency but not critical emergency response.

1. Update Samsung Cloud Assistant to version 8.0.03.8 or later once the patch is officially released by Samsung to correct the default permission settings. 2. Restrict local device access by enforcing strong device authentication mechanisms such as biometrics or PINs to prevent unauthorized physical or logical access. 3. Employ mobile device management (MDM) solutions to monitor and control application permissions and detect suspicious local activities or unauthorized app installations. 4. Educate users on the risks of installing untrusted applications that could exploit local vulnerabilities. 5. Implement endpoint security solutions capable of detecting privilege escalation or unauthorized file access on mobile devices. 6. Regularly audit device configurations and permissions to ensure compliance with security policies. 7. For high-risk environments, consider disabling Samsung Cloud Assistant or restricting its usage until patched. 8. Monitor Samsung security advisories for updates and apply patches promptly.