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Critical Android Zero-Click Remote Code Execution Vulnerability

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Android CVE-2026-58868 Zero-Click RCE Heap Overflow Framework Bug

Overview

Google disclosed and patched a critical Android vulnerability tracked as CVE-2026-58868.

The issue could allow remote attackers to execute arbitrary code on vulnerable Android devices without user interaction. Reported affected versions include Android 14 through Android 17.

The vulnerability was addressed in Google's November 2026 Android Security Bulletin. Its zero-interaction profile significantly increases concern for enterprise and personal mobile-device risk.

Technical Details

  • Vulnerability type: Heap buffer overflow (CWE-122).
  • Affected component: Android Framework.
  • Affected function: onOutputReceived.
  • Affected file: FrameDecoder.cpp.
  • Root cause: Out-of-bounds write triggered by heap buffer overflow.
  • Potential exploitation result: Memory corruption with possible arbitrary code execution.
  • Privileges required: None additional.
  • User interaction: Not required.
  • Affected versions: Android 14 to Android 17.

Technical Specifications

Attribute Details
Vulnerability CVE-2026-58868
Weakness Class CWE-122 (Heap-based Buffer Overflow)
Affected Layer Android Framework
Impacted Routine onOutputReceived in FrameDecoder.cpp
Security Property at Risk Memory safety leading to potential remote code execution
Attack Interaction Zero-click (no user interaction required)
Affected Versions Android 14, 15, 16, 17
Patch Context November 2026 Android Security Bulletin

Affected Products

  • Android devices running vulnerable framework builds across Android 14 to 17.
  • Organizational mobile fleets where November 2026 patch levels are not yet enforced.

Attack Scenario

  1. Attacker prepares crafted input to trigger vulnerable processing.
  2. Input reaches affected Android Framework handling path.
  3. onOutputReceived processes malicious data and triggers heap overflow.
  4. Out-of-bounds write corrupts memory.
  5. Attacker may leverage memory corruption for remote code execution without user interaction.

Impact Assessment

  • Potential remote execution of malicious code on vulnerable Android devices
  • Possible compromise of confidentiality and integrity of affected endpoints
  • Increased enterprise risk where mobile devices are used for communication and workflow access
  • Potential payload deployment or follow-on exploitation depending on execution context
  • Final impact depends on device hardening, patch state, and runtime protections

Mitigation Strategies

  1. Update Android devices to security patch level 2026-11-01 or later.
  2. Prefer November 5, 2026 patch level or later for complete November update coverage.
  3. Verify update availability from OEM and carrier channels.
  4. Identify and prioritize vulnerable devices across managed environments.
  5. Enforce minimum patch baselines via MDM controls.
  6. Replace unsupported devices that no longer receive security updates.
  7. Monitor for unusual behavior and unexpected application/system crashes.

Resources and References

Public Reporting

  1. CVE-2026-58868: Critical Android Bug Could Let Attackers Run Remote Code
  2. Android November 2026 Security Bulletin: Critical No-Interaction RCE (CVE-2026-58868) - Prepare Mobile Fleets Now
  3. Google Issues Patches for Critical Android Flaw That Could Allow RCE Without User Interaction

Last Updated: November 9, 2026