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CVE-2025-26462: AccessibilityServiceConnection Logic Error Leading to Privilege Escalation

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Overview

This report analyzes CVE-2025-26462, a significant vulnerability found in AccessibilityServiceConnection.java. Due to a logic error in the code, there is potential for unprivileged background activity launch leading to local escalation of privilege. This flaw affects a wide range of systems and applications using this file, and its exploitation could lead to severe system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-26462
Severity: High (7.8 CVSS Score)
Attack Vector: Local
Privileges Required: None
User Interaction: None
Impact: System compromise, potential data leakage

Affected Products

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Product | Affected Versions

Android OS | Prior to Patch Level 2025-02
Java SDK | Prior to Version X.Y.Z

How the Exploit Works

The exploit leverages a logic error in AccessibilityServiceConnection.java. The error allows an attacker to launch background activities without proper privileges. This could potentially grant the attacker escalated privileges on the local system, leading to unauthorized access to sensitive data or system compromise.

Conceptual Example Code

Here’s a conceptual representation of how the vulnerability might be exploited. Note that this is a representation, not an actual exploit code:

class MaliciousActivity extends AccessibilityService {
@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
// Exploit logic error to launch activity in background
Intent backgroundIntent = new Intent(this, PrivilegedActivity.class);
startActivity(backgroundIntent);
}
}

Mitigation

To mitigate this vulnerability, it is recommended to apply the vendor-provided patch as soon as it’s available. In the interim, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation strategy. However, these should not replace the need for patching the affected systems.

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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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