---
id: "CVE-2026-119382"
page: "https://infrastack.ai/live/CVE-2026-119382"
kind: "vulnerability"
aliases: ["CVE-2026-119382"]
title: "Windows TPM: heap buffer overflow lets a local user gain higher privileges"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows TPM", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "Windows 10 / Server 2016 (1607)", "fixed": ["10.0.14393.9688"], "affected": "< 10.0.14393.9688", "ecosystem": "vendor"}, {"name": "Windows 10 1809 / Server 2019", "fixed": ["10.0.17763.9487"], "affected": "< 10.0.17763.9487", "ecosystem": "vendor"}, {"name": "Windows 10 21H2", "fixed": ["10.0.19044.7846"], "affected": "< 10.0.19044.7846", "ecosystem": "vendor"}, {"name": "Windows 10 22H2", "fixed": ["10.0.19045.7846"], "affected": "< 10.0.19045.7846", "ecosystem": "vendor"}, {"name": "Windows 11 23H2", "fixed": ["10.0.22631.7711"], "affected": "< 10.0.22631.7711", "ecosystem": "vendor"}, {"name": "Windows 11 24H2", "fixed": ["10.0.26100.9974"], "affected": "< 10.0.26100.9974", "ecosystem": "vendor"}, {"name": "Windows 11 25H2", "fixed": ["10.0.26200.9974"], "affected": "< 10.0.26200.9974", "ecosystem": "vendor"}, {"name": "Windows 11 26H1", "fixed": ["10.0.28000.3501"], "affected": "< 10.0.28000.3501", "ecosystem": "vendor"}, {"name": "Windows 11 26H2", "fixed": ["10.0.26300.9974"], "affected": "< 10.0.26300.9974", "ecosystem": "vendor"}, {"name": "Windows Server 2022", "fixed": ["10.0.20348.5870"], "affected": "< 10.0.20348.5870", "ecosystem": "vendor"}, {"name": "Windows Server 2025", "fixed": ["10.0.26100.33822"], "affected": "< 10.0.26100.33822", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["infrastructure", "local", "privilege-escalation", "tpm", "windows"]
not_affected_if: []
published_at: "2026-11-10T19:19:52+00:00"
first_seen_at: "2026-11-10T19:24:55+00:00"
updated_at: "2026-11-10T22:58:52+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119382", "first_seen_at": "2026-11-10T19:24:55+00:00"}, {"source": "analyst", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-119382", "first_seen_at": "2026-11-10T22:58:52+00:00", "cites": ["https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-119382", "https://app.opencve.io/cve/CVE-2026-119382"]}]
exploit_sources: []
---

# Windows TPM: heap buffer overflow lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-119382 (this .md is for agents)

A heap-based buffer overflow in the Windows Trusted Platform Module component lets an authorized local user escalate privileges. The sources do not give the affected Windows builds or a fixed version.

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

## Affected

- vendor:Windows TPM affected range not listed fixed no fixed version listed
- vendor:Windows 10 / Server 2016 (1607) affected < 10.0.14393.9688 fixed 10.0.14393.9688
- vendor:Windows 10 1809 / Server 2019 affected < 10.0.17763.9487 fixed 10.0.17763.9487
- vendor:Windows 10 21H2 affected < 10.0.19044.7846 fixed 10.0.19044.7846
- vendor:Windows 10 22H2 affected < 10.0.19045.7846 fixed 10.0.19045.7846
- vendor:Windows 11 23H2 affected < 10.0.22631.7711 fixed 10.0.22631.7711
- vendor:Windows 11 24H2 affected < 10.0.26100.9974 fixed 10.0.26100.9974
- vendor:Windows 11 25H2 affected < 10.0.26200.9974 fixed 10.0.26200.9974
- vendor:Windows 11 26H1 affected < 10.0.28000.3501 fixed 10.0.28000.3501
- vendor:Windows 11 26H2 affected < 10.0.26300.9974 fixed 10.0.26300.9974
- vendor:Windows Server 2022 affected < 10.0.20348.5870 fixed 10.0.20348.5870
- vendor:Windows Server 2025 affected < 10.0.26100.33822 fixed 10.0.26100.33822

## How to check

Run winver or [System.Environment]::OSVersion / (Get-ComputerInfo).OsBuildNumber and compare the full build (e.g. 10.0.19045.xxxx) with the fixed build for your Windows version; lower means exposed. Check on any machine with a TPM stack, i.e. all supported Windows.

## Fix

Install the November 2026 (10 Nov) cumulative update so the build is at or above: Win10 1607/Server 2016 10.0.14393.9688; Win10 1809/Server 2019 10.0.17763.9487; Win10 21H2 10.0.19044.7846; Win10 22H2 10.0.19045.7846; Win11 23H2 10.0.22631.7711; Win11 24H2 10.0.26100.9974; Win11 25H2 10.0.26200.9974; Win11 26H1 10.0.28000.3501; Win11 26H2 10.0.26300.9974; Server 2022 10.0.20348.5870; Server 2025 10.0.26100.33822.

## Timeline

- 2026-11-10T19:24:55+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119382
- 2026-11-10T22:58:52+00:00 analyst https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-119382 — Fixed builds from Microsoft CNA data as mirrored by OpenCVE; MSRC CVRF confirms release in Nov 2026 Patch Tuesday. MSRC update guide page is JS-only, not read directly, so nothing marked verified. Not exploited per sources.

## Documents

- [advisory] MSRC CVRF: CVE-2026-119382 in November 2026 Security Updates https://api.msrc.microsoft.com/cvrf/v3.0/updates/CVE-2026-119382
- [describes] OpenCVE: CVE-2026-119382 (Microsoft CNA affected builds) https://app.opencve.io/cve/CVE-2026-119382

## From the sources

Heap-based buffer overflow in Windows TPM allows an authorized attacker to elevate privileges locally.

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