---
id: "CVE-2026-112800"
page: "https://infrastack.ai/live/CVE-2026-112800"
kind: "vulnerability"
aliases: ["CVE-2026-112800"]
title: "Windows Diagnostic Policy Service: heap overflow lets a local user gain higher privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "local-privilege-escalation", "patch-tuesday", "windows"]
not_affected_if: []
published_at: "2026-11-10T19:18:42+00:00"
first_seen_at: "2026-11-10T19:24:33+00:00"
updated_at: "2026-11-11T00:04:54+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112800", "first_seen_at": "2026-11-10T19:24:33+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-11T00:04:54+00:00"}]
exploit_sources: []
---

# Windows Diagnostic Policy Service: heap overflow lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-112800 (this .md is for agents)

A heap-based buffer overflow in the Windows Diagnostic Policy Service lets an already-authorized local user elevate their privileges. An attacker who gets a foothold on a Windows machine could gain higher-level control of that system.

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

## How to check

Open the Microsoft Security Update Guide entry for CVE-2026-112800 and match your Windows build to the KB listed. Confirm the November 2026 cumulative update is installed (Settings > Windows Update > Update history, or Get-HotFix). Affected builds not confirmed by us.

## Fix

Install the November 2026 Windows cumulative update for your Windows version. The exact KB for this CVE is unconfirmed; take it from the MSRC entry.

## Timeline

- 2026-11-10T19:24:33+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112800
- 2026-11-11T00:04:54+00:00 analyst — MSRC page and NVD page returned no readable content; search shows only Nov 2026 Patch Tuesday roundups (KB5131077 etc.) without this CVE's entry. Builds and KB for this CVE unconfirmed; nothing verified.

## From the sources

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

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