CVE-2026-70126

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Out-of-Bounds Read in Windows Bluetooth Port Driver

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Windows Bluetooth Port Driver allows an unauthorized attacker to execute code over an adjacent network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-70126

EUVD

EUVD-2026-99174

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	10 Version 1607 10.0.14393.0
Microsoft	Windows	10 Version 1809 10.0.17763.0
Microsoft	Windows	10 Version 21H2 10.0.19044.0
Microsoft	Windows	10 Version 22H2 10.0.19045.0
Microsoft	Windows	11 version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0
Microsoft	Windows	11 Version 26H2 10.0.26300.0
Microsoft	Windows	Server 2012 R2 6.3.9600.0
Microsoft	Windows	Server 2012 R2 (Server Core installation) 6.3.9600.0
Microsoft	Windows	Server 2016 10.0.14393.0
Microsoft	Windows	Server 2016 (Server Core installation) 10.0.14393.0
Microsoft	Windows	Server 2019 10.0.17763.0
Microsoft	Windows	Server 2019 (Server Core installation) 10.0.17763.0
Microsoft	Windows	Server 2022 10.0.20348.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds read flaw in the Windows Bluetooth Port Driver. It allows an unauthorized attacker within adjacent network range to execute arbitrary code on affected systems.

Detection Guidance

Detection requires monitoring for unusual Bluetooth driver activity or network traffic patterns. Use Windows Event Viewer to check for Bluetooth-related errors or crashes in the Bluetooth Port Driver logs. Enable verbose logging for Bluetooth services via PowerShell commands like 'Get-WinEvent -LogName System -ProviderName Microsoft-Windows-Bluetooth' to identify anomalies.

Impact Analysis

An attacker could exploit this to run malicious code on your device, potentially gaining control over it. This could lead to data theft, installation of malware, or further network compromise if the system is connected to other devices.

Compliance Impact

This vulnerability allows remote code execution via an adjacent network, which could lead to unauthorized access to sensitive data. This may violate data protection requirements under GDPR and HIPAA by enabling unauthorized data access or disclosure.

Mitigation Strategies

Apply the latest Windows security updates from Microsoft Update to patch the Bluetooth Port Driver vulnerability. Disable Bluetooth if not in use and restrict adjacent network access to Bluetooth-enabled systems.

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