---
id: "CVE-2026-112756"
page: "https://infrastack.ai/live/CVE-2026-112756"
kind: "vulnerability"
aliases: ["CVE-2026-112756"]
title: "Windows Filtering Platform: use-after-free lets a local user gain higher privileges (Nov 2026 Patch Tuesday)"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows Filtering Platform", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "Windows 11 24H2", "fixed": ["10.0.26100.9974"], "affected": "< 10.0.26100.9974", "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: ["infrastructure", "local", "privilege-escalation", "windows", "windows-server"]
not_affected_if: ["patched-nov-2026"]
published_at: "2026-11-10T19:18:36+00:00"
first_seen_at: "2026-11-10T19:24:32+00:00"
updated_at: "2026-11-11T00:12:39+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112756", "first_seen_at": "2026-11-10T19:24:32+00:00"}, {"source": "analyst", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112756", "first_seen_at": "2026-11-11T00:12:39+00:00", "cites": ["https://nvd.nist.gov/vuln/detail/CVE-2026-112756", "https://www.nmmapper.com/nvd/cve/CVE-2026-112756/"]}]
exploit_sources: []
---

# Windows Filtering Platform: use-after-free lets a local user gain higher privileges (Nov 2026 Patch Tuesday)

Link for people: https://infrastack.ai/live/CVE-2026-112756 (this .md is for agents)

Windows Filtering Platform, the Windows networking filter engine, has a use-after-free memory bug. A logged-in user with local access can use it to elevate their privileges on the machine.

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

## Affected

- vendor:Windows Filtering Platform affected range not listed fixed no fixed version listed
- vendor:Windows 11 24H2 affected < 10.0.26100.9974 fixed 10.0.26100.9974
- 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 [Environment]::OSVersion / (Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion').UBR and compare the full build number with the fixed build for your Windows version (e.g. Windows 11 24H2: 10.0.26100.9974; Server 2022: 10.0.20348.5870; Server 2025: 10.0.26100.33822). Below the fixed build means exposed. Fixed builds are from a mirror of Microsoft's CVE record, confirm on the MSRC page.

## Fix

Install the November 2026 cumulative security update for your Windows version (builds: Win10 1607/Server 2016 10.0.14393.9688; 1809/Server 2019 10.0.17763.9487; Win10 21H2 10.0.19044.7846; 22H2 10.0.19045.7846; Win11 23H2 10.0.22631.7711; Win11 24H2 10.0.26100.9974; 25H2 10.0.26200.9974; 26H1 10.0.28000.3501; 26H2 10.0.26300.9974; Server 2022 10.0.20348.5870; Server 2025 10.0.26100.33822). Unverified against MSRC.

## Timeline

- 2026-11-10T19:24:32+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112756
- 2026-11-11T00:12:39+00:00 analyst https://nvd.nist.gov/vuln/detail/CVE-2026-112756 — MSRC update guide page is JS-only and returned no text, so nothing verified. Affected builds and fixed builds taken from a mirror (nmmapper) of Microsoft's CVE record; should be confirmed on MSRC. Not exploited per KEV/Rapid7 as of now; no PoC found.

## Documents

- [describes] NVD CVE-2026-112756 (CNA: Microsoft) https://nvd.nist.gov/vuln/detail/CVE-2026-112756
- [mentions] nmmapper mirror of Microsoft CNA record: affected builds https://www.nmmapper.com/nvd/cve/CVE-2026-112756/

## From the sources

Use after free in Windows Filtering Platform (WFP) allows an authorized attacker to elevate privileges locally.

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