CVE-2026-83739: Windows Bluetooth Service Remote Code Execution Vulnerability
Use after free in Windows Bluetooth Service allows an unauthorized attacker to execute code over an adjacent network.
Other sources
Windows Bluetooth Service Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646
Event History
Frequently Asked Questions
Who can attempt to exploit this vulnerability?
An unauthorized attacker on an adjacent network can attempt exploitation. The attack vector is adjacent-network rather than Internet-based remote access.
Does exploitation require credentials or user interaction?
No privileges and no user interaction are required, according to the listed vector. Exploitation is rated high complexity.
Which systems should be reviewed for exposure?
Review systems running Microsoft Windows 10, Windows 11, Windows Server 2019, Windows Server 2022, or Windows Server 2025 that use the Microsoft Windows Bluetooth Service.