CVE-2025-0086 is a medium-severity vulnerability affecting multiple recent versions of the Google Android operating system, specifically versions 12, 12L, 13, 14, and 15. The flaw exists in the AccountManagerService component, particularly in the onResult method of AccountManagerService.java. The vulnerability arises due to a missing permission check that allows an attacker with local access to overwrite an authentication token. This flaw leads to local information disclosure without requiring any additional execution privileges or user interaction. The vulnerability is classified under CWE-862, which relates to improper authorization. Exploiting this vulnerability does not require elevated privileges or user interaction, making it easier for a local attacker to leverage. However, the attack vector is local, meaning the attacker must have some form of access to the device, such as physical access or the ability to run code locally. The impact is primarily on confidentiality, as the attacker can gain access to sensitive authentication tokens, potentially allowing further unauthorized access or impersonation. There is no impact on integrity or availability reported. No known exploits are currently observed in the wild, and no patches have been linked yet. The CVSS v3.1 base score is 6.2, reflecting a medium severity level, with the vector indicating low attack complexity, no privileges required, and no user interaction needed.

For European organizations, this vulnerability poses a risk primarily to employees and users relying on Android devices within corporate environments. The disclosure of authentication tokens could lead to unauthorized access to corporate accounts or services if tokens are reused or provide access to sensitive resources. This could facilitate lateral movement within corporate networks or compromise of personal data, potentially violating GDPR requirements concerning data confidentiality and protection. Since the vulnerability requires local access, the risk is higher in scenarios where devices are shared, lost, or accessed by unauthorized personnel. Organizations with Bring Your Own Device (BYOD) policies or those using Android devices for sensitive operations should be particularly cautious. The lack of required user interaction lowers the barrier for exploitation once local access is obtained, increasing the threat in environments with less physical security or where malware can gain local execution. However, the absence of known exploits and the medium severity rating suggest that while the threat is real, it is not currently critical or widespread.

European organizations should prioritize the following mitigations: 1) Ensure all Android devices are updated to the latest available OS versions once Google releases patches addressing CVE-2025-0086. 2) Enforce strict physical security controls to prevent unauthorized local access to devices, including screen locks, biometric authentication, and secure boot features. 3) Implement Mobile Device Management (MDM) solutions to monitor device integrity and enforce security policies, including restricting installation of untrusted applications that could exploit local vulnerabilities. 4) Educate users about the risks of leaving devices unattended or lending them to untrusted individuals. 5) Review and limit the scope of authentication tokens stored on devices, applying token expiration and revocation policies to reduce the window of exposure. 6) Monitor for unusual authentication activities that could indicate token misuse. 7) Consider network segmentation and zero-trust principles to limit the impact if a device is compromised. These steps go beyond generic advice by focusing on local access prevention, token management, and proactive monitoring tailored to this vulnerability's characteristics.