---
id: "CVE-2026-70120"
page: "https://infrastack.ai/live/CVE-2026-70120"
kind: "vulnerability"
aliases: ["CVE-2026-70120"]
title: "Windows Bluetooth driver use-after-free lets a local user gain higher privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Microsoft Bluetooth Driver", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "Windows 11 24H2/25H2/26H2", "fixed": ["10.0.26100.9974"], "affected": "< 10.0.26100.9974", "ecosystem": "vendor"}, {"name": "Windows 11 23H2", "fixed": ["10.0.22631.7711"], "affected": "< 10.0.22631.7711", "ecosystem": "vendor"}, {"name": "Windows 10 22H2", "fixed": ["10.0.19045.7846"], "affected": "< 10.0.19045.7846", "ecosystem": "vendor"}, {"name": "Windows Server 2025", "fixed": ["10.0.26100.33822"], "affected": "< 10.0.26100.33822", "ecosystem": "vendor"}, {"name": "Windows Server 2022", "fixed": ["10.0.20348.5870"], "affected": "< 10.0.20348.5870", "ecosystem": "vendor"}, {"name": "Windows Server 2019", "fixed": ["10.0.17763.9487"], "affected": "< 10.0.17763.9487", "ecosystem": "vendor"}, {"name": "Windows Server 2016", "fixed": ["10.0.14393.9688"], "affected": "< 10.0.14393.9688", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["bluetooth", "infrastructure", "local", "privilege-escalation", "windows"]
not_affected_if: ["patched-builds"]
published_at: "2026-11-10T19:21:20+00:00"
first_seen_at: "2026-11-10T19:25:17+00:00"
updated_at: "2026-11-10T21:14:28+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70120", "first_seen_at": "2026-11-10T19:25:17+00:00"}, {"source": "analyst", "url": "https://cveawg.mitre.org/api/cve/CVE-2026-70120", "first_seen_at": "2026-11-10T21:14:28+00:00", "cites": ["https://cveawg.mitre.org/api/cve/CVE-2026-70120"]}]
exploit_sources: []
---

# Windows Bluetooth driver use-after-free lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-70120 (this .md is for agents)

Microsoft's CVE record says a use-after-free in the Microsoft Bluetooth Driver lets an authorized local attacker with low privileges elevate privileges on Windows. CVSS 7.0, exploit code unproven (E:U), no exploitation reported. Fixed by the November 2026 Windows updates; the trigger is not described.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Microsoft Bluetooth Driver affected range not listed fixed no fixed version listed
- vendor:Windows 11 24H2/25H2/26H2 affected < 10.0.26100.9974 fixed 10.0.26100.9974
- vendor:Windows 11 23H2 affected < 10.0.22631.7711 fixed 10.0.22631.7711
- vendor:Windows 10 22H2 affected < 10.0.19045.7846 fixed 10.0.19045.7846
- vendor:Windows Server 2025 affected < 10.0.26100.33822 fixed 10.0.26100.33822
- vendor:Windows Server 2022 affected < 10.0.20348.5870 fixed 10.0.20348.5870
- vendor:Windows Server 2019 affected < 10.0.17763.9487 fixed 10.0.17763.9487
- vendor:Windows Server 2016 affected < 10.0.14393.9688 fixed 10.0.14393.9688

## How to check

Run winver or [System.Environment]::OSVersion / (Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion').UBR and compare the full build to the fixed builds: Win11 24H2 10.0.26100.9974, 25H2 10.0.26200.9974, 23H2 10.0.22631.7711, 26H1 10.0.28000.3501, 26H2 10.0.26300.9974, Win10 22H2 10.0.19045.7846, 21H2 10.0.19044.7846, Server 2025 10.0.26100.33822, Server 2022 10.0.20348.5870, Server 2019/1809 10.0.17763.9487, Server 2016/1607 10.0.14393.9688. Anything lower is affected. Hosts without Bluetooth hardware are less likely to matter, but Microsoft does not say so.

## Fix

Install the November 2026 Windows cumulative update bringing the build to at least the fixed build for your version (listed in how-to-check). KB numbers not confirmed; see the MSRC page.

## Timeline

- 2026-11-10T19:25:17+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-70120
- 2026-11-10T21:14:28+00:00 analyst https://cveawg.mitre.org/api/cve/CVE-2026-70120 — Read Microsoft's CNA CVE record (cveawg); MSRC page is JS-only and returned nothing. Builds, CWE-416, CVSS 7.0 E:U from it. KB numbers, trigger unknown. 26H2 uses 26300.9974, 26H1 28000.3501, Win10 21H2 19044.7846, 1809 17763.9487, 1607 14393.9688 not in product rows. No social search done.

## Documents

- [advisory] CVE-2026-70120 CVE record published by Microsoft (CNA) https://cveawg.mitre.org/api/cve/CVE-2026-70120

## From the sources

Use after free in Microsoft Bluetooth Driver allows an authorized attacker to elevate privileges locally.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_