Windows Bluetooth Service: Information disclosure vulnerability
Summary
A flaw in the Windows Bluetooth Service allows an attacker with a local, low-privileged account to disclose sensitive system information. The attack requires local access and low privileges, and no user interaction. Only confidentiality is affected (CVSS 5.5, Medium), with no integrity or availability impact. The flaw is not reachable from the internet.
Affected
- Windows 10 Version 1607 and Windows Server 2016 (including Server Core): builds before 10.0.14393.9688
- Windows 10 Version 1809 and Windows Server 2019 (including Server Core): builds before 10.0.17763.9487
- Windows 10 Version 21H2: builds before 10.0.19044.7846
- Windows 10 Version 22H2: builds before 10.0.19045.7846
- Windows 11 Version 23H2: builds before 10.0.22631.7711
- Windows 11 Version 24H2 and 25H2, Windows 11 Version 26H2: builds before 10.0.26100.9974, 10.0.26200.9974 and 10.0.26300.9974
- Windows 11 Version 26H1: builds before 10.0.28000.3501
- Windows Server 2022: builds before 10.0.20348.5870
Fixed in
- Fixed in the Microsoft security updates of November 2026 (Patch Tuesday, published 10 November 2026).
- Fixed builds are listed in the affected section. Exact KB numbers: Unknown. Confirm them on the Microsoft Security Update Guide.
Workaround
- Unknown. No Microsoft workaround has been published. Installing the update is the remedy.
- Interim measure (not a Microsoft mitigation): disable the Bluetooth service or adapter on hosts that do not need it.
Exploitation
- Microsoft rates exploitation as less likely. CVSS exploit maturity is Unproven.
- Rapid7 lists it as not publicly disclosed.
- CISA SSVC: exploitation none, not automatable.
- No public proof of concept and no known in-the-wild exploitation found at the time of writing.
Our recommendation
- Install the November 2026 Windows security updates on affected Windows 10, Windows 11 and Windows Server systems in the normal patch cycle.
- Patch this together with CVE-2026-95996 (CVSS 8.8) and CVE-2026-88213 (CVSS 7.8), which are Bluetooth elevation-of-privilege flaws in the same release.
- Check which systems have the Bluetooth service enabled and disable it where it is not needed.
- Limit local accounts on shared workstations and servers, and monitor for unusual local activity.
- Recheck NVD and CISA KEV once NVD analysis is complete.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Information disclosure – Windows Bluetooth Service
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation less likely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5131291, KB5131085, KB5131096, KB5131090, KB5131087, KB5132061
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Update Guide: CVE-2026-96001 msrc.microsoft.com
- CVE Record CVE-2026-96001 (CNA: Microsoft) www.cve.org
- Rapid7: Patch Tuesday November 2026 www.rapid7.com
- Strix AI: CVE-2026-96001 www.strix.ai
- Senserva: KB5131090 senserva.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 16:33.
Original description (NVD)
Exposure of sensitive system information to an unauthorized control sphere in Windows Bluetooth Service allows an authorized attacker to disclose information locally.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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