CVE-2024-21306

Device spoofing via undisclosed Bluetooth authentication flaw

Published Jan 9, 2024 · Updated May 3, 2025

Bluetooth spoofing in Microsoft Windows Bluetooth Driver allows physically proximate attackers to impersonate a device with user interaction. Microsoft has not published the affected driver routine or the unauthenticated operation it performs on Bluetooth input. Exploitation requires Bluetooth proximity and user interaction and permits identity spoofing without reported data disclosure or service interruption.

CVSS severity5.7
Medium
EPSS probability5.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Bluetooth spoofing in Microsoft Windows Bluetooth Driver allows physically proximate attackers to impersonate a device with user interaction. Microsoft has not published the affected driver routine or the unauthenticated operation it performs on Bluetooth input. Exploitation requires Bluetooth proximity and user interaction and permits identity spoofing without reported data disclosure or service interruption.

The record

CVE
CVE-2024-21306
Published
Jan 9, 2024
Updated
May 3, 2025
Vendor
Microsoft
Product
Windows 11 version 21H2
Classifications
CWE-306, T1036
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 9, 2024CVE publishedPublication date reported by the CVE source.
  2. May 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.0 <10.0.22000.2713

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.2713
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.3930
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.643
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.3007
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.3930
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.3007
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.3007
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.2227

Published CVSS scores

5.7Microsoft CorporationCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1036Masquerading

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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