CVE-2026-49921

9.8

Google · Android

A heap buffer overflow vulnerability in Google Android allows for unauthenticated remote code execution without user interaction.

Executive summary

A critical heap buffer overflow vulnerability in Google Android allows unauthenticated attackers to achieve remote code execution, posing a severe risk to system integrity and data security.

Vulnerability

This memory safety issue involves a heap buffer overflow occurring in multiple locations within the Android framework. The flaw allows an unauthenticated remote attacker to execute arbitrary code on the target device without requiring any user interaction or elevated privileges.

Business impact

The ability for an unauthenticated attacker to execute arbitrary code remotely represents a critical security risk that can lead to total system compromise. This vulnerability could result in unauthorized data exfiltration, the installation of malicious software, or complete loss of control over the affected Android devices, potentially leading to significant reputational and operational damage. Given the 9.8 CVSS score, immediate attention is required to prevent large-scale exploitation across the mobile infrastructure.

Remediation

Immediate Action: Apply the latest security updates provided by Google via the official Android security bulletin to address this memory safety flaw.

Proactive Monitoring: Monitor device activity for unusual network traffic or unexpected process behavior that may indicate unauthorized code execution attempts.

Compensating Controls: Ensure that enterprise mobile device management policies are strictly enforced and restrict unnecessary network access to devices until updates are applied.

Exploitation status

Public Exploit Available: Unknown

Analyst recommendation

Given the critical severity of this heap buffer overflow and the potential for unauthenticated remote code execution, organizations must prioritize the deployment of the latest Android security patches. Administrators should verify that all managed devices are updated to the current version provided in the Google security bulletin to neutralize this high-risk threat immediately.

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History

  1. Disclosed CVE record published
  2. Collected by CVE Brief via github
  3. Analyst report written
  4. Published in the daily brief critical section

Sources