CVE-2025-26430 is a local elevation of privilege vulnerability identified in Google Android version 15, specifically within the getDestinationForApp function of the SpaAppBridgeActivity component. The vulnerability arises due to a logic error that allows a cross-user file reveal, meaning that a malicious local user or application could access files belonging to other users on the same device. This flaw does not require any additional execution privileges beyond what the attacker already has, nor does it require any user interaction to be exploited. Essentially, an attacker with local access to the device can leverage this vulnerability to escalate their privileges by bypassing user separation controls, potentially gaining access to sensitive data or system resources that should be restricted. The vulnerability is rooted in improper handling of user context or permissions within the code, leading to unintended file disclosure across user boundaries. While no known exploits are currently reported in the wild, the flaw's nature and ease of exploitation make it a significant concern for device security. No CVSS score has been assigned yet, and no official patches or mitigations have been linked at the time of publication.

For European organizations, the impact of CVE-2025-26430 can be considerable, especially for those relying on Android devices for sensitive operations or handling confidential data. Since the vulnerability allows local privilege escalation without user interaction, it could be exploited by malicious insiders or through compromised applications to access or manipulate data belonging to other users on the device. This could lead to unauthorized data disclosure, violation of data protection regulations such as GDPR, and potential lateral movement within corporate environments if Android devices are used as part of the enterprise infrastructure. The cross-user file reveal could expose personal or corporate information, credentials, or other sensitive files, undermining device integrity and user privacy. Given the widespread use of Android devices across European countries in both consumer and enterprise contexts, the vulnerability poses a risk to sectors including finance, healthcare, government, and critical infrastructure where data confidentiality and device security are paramount.

To mitigate the risks posed by CVE-2025-26430, European organizations should take proactive and specific steps beyond generic advice: 1) Prioritize updating Android devices to the latest version once Google releases a security patch addressing this vulnerability. 2) Implement strict device management policies using Mobile Device Management (MDM) solutions to control app installations and restrict local user permissions, minimizing the risk of malicious local applications exploiting the flaw. 3) Enforce application sandboxing and verify app permissions rigorously to prevent unauthorized access to sensitive files. 4) Monitor device logs and behaviors for unusual file access patterns that could indicate exploitation attempts. 5) Educate users about the risks of installing untrusted applications and the importance of device security hygiene. 6) For organizations with BYOD policies, enforce compliance checks to ensure devices are updated and secure. 7) Consider additional endpoint security solutions that can detect and block privilege escalation attempts on Android devices. These targeted measures will help reduce the attack surface and limit the potential impact until official patches are widely deployed.