Android Integer Overflow Local Privilege Escalation and Code Execution Vulnerability (CVE-2025-48595)

1. Apply Official Security Patches

This vulnerability is addressed in the Android Security Bulletin - June 2026. Users and administrators must apply the latest system updates provided by their device manufacturers (OEMs).

• Navigate to Settings > System > System Update or Settings > About Phone > Software Update.
• Verify that the Security Patch Level is 2026-06-01 or later.

2. Temporary Mitigations (Enterprise Mobile Management - EMM/MDM)

For legacy or unpatchable devices in enterprise environments, enforce the following security controls:

• Block Unknown Sources: Enforce MDM policies to restrict the installation of applications from unofficial sources (sideloading APKs).
• Enforce Least Privilege: Audit and restrict unnecessary permissions granted to installed applications.
• Network Segmentation: Restrict vulnerable devices from accessing sensitive corporate networks directly using ZTNA or VPN controls.

CVE-2025-48595 is a critical integer overflow vulnerability (CWE-190) residing in multiple locations within the Android OS.

By manipulating integer values used in memory allocation size calculations or array indexing, an attacker can trigger an integer overflow. This leads to the allocation of an undersized buffer or out-of-bounds memory writes (such as heap corruption), enabling arbitrary code execution.

Key characteristics of this vulnerability include:

• No Privileges Required: No additional execution privileges are needed to trigger the exploit.
• Zero User Interaction: The vulnerability can be exploited silently in the background without any user interaction.
• Active Exploitation (CISA KEV): This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming that threat actors are actively exploiting it in the wild.