CVE-2026-42975: Windows Bluetooth Port Driver Remote Code Execution

Overview

Severity
High (CVSS 8)
CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Category
Remote Code Execution
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2026-Jul
Released
2026-07-14

Description

Heap-based buffer overflow in Windows Bluetooth Port Driver allows an unauthorized attacker to execute code over an adjacent network.

FAQ

According to the CVSS score, the attack vector is adjacent (AV:A). What does this mean for this vulnerability? Exploiting this vulnerability requires an attacker to be within Bluetooth range of the target system. According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? Exploitation of this vulnerability requires that a user enables Bluetooth and the device set to be discoverable, which is not the default configuration on Windows systems. Once discoverability is enabled, no further user interaction is required for exploitation. How could an attacker exploit the vulnerability? An attacker could attempt to exploit this vulnerability by sending a specially crafted Bluetooth configuration request to a nearby affected device. If successful, this could allow the attacker to run code on the device without needing user interaction or prior access.

Affected Products (27)

Windows

  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2022
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows Server 2025 (Server Core installation)
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows Server 2025
  • Windows 11 version 26H1 for x64-based Systems
  • Windows 11 Version 26H1 for ARM64-based Systems
  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)

ESU

  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for 32-bit Systems
  • Windows Server 2012
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)

Security Updates (10)

Acknowledgments

<a href="https://twitter.com/philiptsukerman">Philip Tsukerman</a> with <a href="https://paloaltonetworks.com/">Palo Alto Networks</a>, Christian Siegert - chrisbsd, Hyeon Park (`@_p0her_`) of Korea University, <a href="https://x.com/_twinklestar03">TwinkleStar03</a> with <a href="https://devco.re/">DEVCORE Internship Program</a>, Hyeon Park (`@_p0her_`) of Korea University

Revision History

  • 2026-07-14: Information published.