CVE-2025-48567 is a vulnerability in Google Android operating system versions 14, 15, and 16 that allows local attackers to escalate privileges by bypassing file path filters. The root cause is incorrect Unicode normalization in multiple locations within the OS, which fails to properly sanitize or normalize file paths. This flaw enables attackers to circumvent protections that prevent access to sensitive directories, potentially exposing critical system files or user data. Exploitation requires user interaction, such as opening a malicious file or application, but does not require the attacker to have elevated execution privileges beforehand. This means a local user with limited permissions can leverage this vulnerability to gain higher privileges on the device. Although no known exploits are currently in the wild, the vulnerability is significant due to the widespread use of affected Android versions globally. The lack of a CVSS score indicates the need for an expert severity assessment, which suggests a high severity given the impact on confidentiality, integrity, and availability of system resources. The vulnerability is particularly dangerous because it can be exploited locally without additional privilege escalation steps, increasing the attack surface. The issue highlights the importance of correct Unicode normalization in security-critical path filtering mechanisms. No official patches or mitigation links are currently provided, but Google is expected to release updates addressing this issue.

The vulnerability allows local attackers to bypass file path filters and access sensitive directories, leading to unauthorized access to critical system files or user data. This can result in local privilege escalation, enabling attackers to perform actions normally restricted to higher-privileged users, such as modifying system configurations, installing persistent malware, or accessing confidential information. For organizations, this could compromise the security of employee devices, potentially leading to lateral movement within corporate networks if Android devices are used for enterprise access. The requirement for user interaction limits remote exploitation but does not eliminate risk, especially in environments where users may be tricked into opening malicious files or apps. The widespread deployment of Android versions 14 through 16 means millions of devices globally are potentially affected, increasing the scale of impact. The absence of known exploits in the wild currently reduces immediate risk but also means attackers may develop exploits once patches are released. Overall, the vulnerability threatens device integrity and confidentiality, with possible downstream effects on organizational security posture.

Organizations and users should monitor official Google security advisories and apply patches promptly once they become available for Android versions 14, 15, and 16. Until patches are released, restricting installation of untrusted applications and files can reduce the risk of exploitation. Employ mobile device management (MDM) solutions to enforce application whitelisting and limit user permissions to prevent unauthorized app installations. Educate users about the risks of opening unknown files or links that could trigger the vulnerability. Implement runtime application self-protection (RASP) or endpoint detection and response (EDR) tools on Android devices where possible to detect suspicious activities related to privilege escalation attempts. Regularly audit device configurations and installed applications to identify potential security gaps. For enterprises, consider network segmentation and limiting Android device access to sensitive systems to reduce potential lateral movement. Finally, verify device integrity after patching to ensure no compromise occurred prior to remediation.