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CVE-2025-26444: Privilege Escalation Vulnerability in VoiceInteractionManagerService.java

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Overview

The CVE-2025-26444 vulnerability refers to a bug in the onHandleForceStop function of VoiceInteractionManagerService.java. This bug could cause the system to incorrectly switch back to the default assistant application when a user-selected assistant is forcibly stopped due to a logic error. This could lead to local privilege escalation, potentially compromising the system or leading to data leakage.

Vulnerability Summary

CVE ID: CVE-2025-26444
Severity: High (7.8 CVSS score)
Attack Vector: Local
Privileges Required: None
User Interaction: Not required
Impact: Local escalation of privilege leading to potential system compromise or data leakage.

Affected Products

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Product | Affected Versions

Android | Pie, Oreo, Nougat
Google Assistant | All versions prior to patch

How the Exploit Works

The exploit works by taking advantage of a logic error in the onHandleForceStop function of VoiceInteractionManagerService.java. This error can be triggered when a user-selected assistant is forcibly stopped, causing the system to incorrectly revert to the default assistant application. In this state, the default assistant application is automatically granted ROLE_ASSISTANT, leading to a local privilege escalation.

Conceptual Example Code

This is a conceptual example of how the vulnerability might be exploited. This pseudocode demonstrates the triggering of a forced stop on a user-selected assistant, causing the system to revert to the default assistant application.

VoiceInteractionManagerService voiceService = getVoiceService();
voiceService.onHandleForceStop();
voiceService.setDefaultAssistant();
voiceService.grantRoleAssistant();

Mitigation

To mitigate this vulnerability, it is recommended to apply the latest patch provided by the vendor. If the patch cannot be applied immediately, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as temporary mitigation.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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