CVE-2025-48567: 
NixOS vulnerability analysis and mitigation

CVE-2025-48567 is a path traversal vulnerability in Android caused by incorrect Unicode normalization, allowing a local attacker to bypass file path filters designed to prevent access to sensitive directories. It affects Android versions 14.0, 15.0, and 16.0. The vulnerability was published on March 2, 2026, and addressed in the March 2026 Android Security Bulletin. It carries a CVSS v3.1 base score of 7.8 (High), requiring local access and user interaction but no special privileges (Android Security Bulletin, Red Hat CVE).

The root cause is improper Unicode normalization (CWE-22: Path Traversal) in multiple locations within the Android OS, where file path filters fail to correctly normalize Unicode characters before validation. An attacker can craft file paths using Unicode representations that bypass the filter logic, ultimately gaining access to sensitive directories that should be restricted. Exploitation requires local access to the device and some form of user interaction, such as opening a malicious file or application. No public proof-of-concept or technical write-up has been identified at this time (Android Security Bulletin, Red Hat CVE).

Successful exploitation leads to local escalation of privilege, with high impact to confidentiality, integrity, and availability. An unprivileged local user could access sensitive directories, read or modify protected data, and potentially destabilize affected system components. The vulnerability does not enable remote exploitation but could be chained with other vulnerabilities for broader compromise (Android Security Bulletin).

There is no known public proof-of-concept and no evidence of active in-the-wild exploitation as of the time of publication. The EPSS score is extremely low at 0.000050, reflecting minimal current exploitation probability. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. No threat actor attribution has been reported (Red Hat CVE, Android Security Bulletin).

Google addressed this vulnerability in the March 2026 Android Security Bulletin (patch level 2026-03-01). Users and administrators should apply the March 2026 security update to all affected Android 14, 15, and 16 devices as soon as it is available from their device manufacturer. As an interim measure, restrict local access to devices and advise users to avoid interacting with untrusted files or applications that could exploit this normalization bypass (Android Security Bulletin, CIS Advisory).

The CIS (Center for Internet Security) issued an advisory covering multiple vulnerabilities in the March 2026 Android OS update, including CVE-2025-48567, noting the potential for privilege escalation (CIS Advisory). Samsung's March 2026 security patch details were also covered by community outlets, reflecting broad OEM adoption of the fix (SammyFans). No significant independent researcher commentary or social media discussion has been identified for this specific CVE.