CVE-2023-35634

Code execution via Bluetooth driver stack overflow

Published Dec 12, 2023 · Updated Jan 1, 2025

Stack-based buffer overflow in the Microsoft Windows Bluetooth driver allows physically proximate attackers to execute arbitrary code. Microsoft identifies CWE-121 but has not disclosed the affected routine, the Bluetooth input that reaches it, or the bounds-checking failure. Microsoft's assessment requires low privileges and Bluetooth-range access, requires no user interaction, and bounds impact to code execution on the affected Windows system.

CVSS severity8.0
High
EPSS probability0.95%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in the Microsoft Windows Bluetooth driver allows physically proximate attackers to execute arbitrary code. Microsoft identifies CWE-121 but has not disclosed the affected routine, the Bluetooth input that reaches it, or the bounds-checking failure. Microsoft's assessment requires low privileges and Bluetooth-range access, requires no user interaction, and bounds impact to code execution on the affected Windows system.

The record

CVE
CVE-2023-35634
Published
Dec 12, 2023
Updated
Jan 1, 2025
Vendor
Microsoft
Product
Windows 11 version 21H2
Classifications
CWE-121
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 1, 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 <10.0.22000.2652

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.2652
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22621.2861
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.2861
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.2861

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.0Microsoft CorporationCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

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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