CVE-2025-48593: 
NixOS vulnerability analysis and mitigation

CVE-2025-48593 is a critical remote code execution (RCE) vulnerability discovered in Android's System component affecting Android versions 13 through 16. The vulnerability was disclosed in Google's November 2025 Android Security Bulletin and patched in the 2025-11-01 security update. This zero-click vulnerability requires no user interaction or additional execution privileges for exploitation (Security Affairs, Security Online).

The vulnerability stems from insufficient validation of user input in the Android System component, specifically related to the HF client discovery database. The issue was tracked internally as bug 374746961, and its severity is rated as Critical. The vulnerability requires no additional execution privileges and can be exploited without any user interaction, making it particularly dangerous. The flaw affects fundamental Android operations that run on every compatible device (GBHackers).

The vulnerability allows attackers to execute arbitrary code remotely on affected Android devices without requiring elevated access privileges. An attacker can potentially take complete control of affected Android phones and tablets if successfully exploited. The severity rating is based on its potential impact if platform and service mitigations are bypassed (Security Online, GBHackers).

Google has released patches for this vulnerability in the November 2025 Android security update (patch level 2025-11-01). Users are strongly encouraged to update their devices as soon as the security patch becomes available through their device manufacturers. Google Play Protect provides some defense but cannot fully mitigate this system-level vulnerability (Security Online).