---
id: "CVE-2026-119992"
page: "https://infrastack.ai/live/CVE-2026-119992"
kind: "vulnerability"
aliases: ["CVE-2026-119992"]
title: "Windows HTTP.sys: double free lets a local user gain higher privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["http-sys", "infrastructure", "local-privilege-escalation", "windows", "windows-server"]
not_affected_if: ["patched-november-2026"]
published_at: "2026-11-10T19:20:24+00:00"
first_seen_at: "2026-11-10T19:25:06+00:00"
updated_at: "2026-11-10T22:10:14+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119992", "first_seen_at": "2026-11-10T19:25:06+00:00"}, {"source": "analyst", "url": "https://advisories.checkpoint.com/defense/advisories/public/2026/cpai-2026-17598.html/", "first_seen_at": "2026-11-10T22:10:14+00:00", "cites": ["https://advisories.checkpoint.com/defense/advisories/public/2026/cpai-2026-17598.html/"]}]
exploit_sources: []
---

# Windows HTTP.sys: double free lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-119992 (this .md is for agents)

A double free in the Windows HTTP.sys driver lets a local user with low privileges gain higher privileges (CVSS 7.0, local, high complexity). Microsoft published it in the November 2026 Patch Tuesday cycle. No exploitation reported in the sources I could read.

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

## How to check

Run winver or (Get-ComputerInfo).OsBuildNumber and compare with the fixed build in Microsoft's Security Update Guide entry for CVE-2026-119992 (not readable by me; KB and build numbers unknown). Also run Get-HotFix to see whether the November 2026 cumulative update is installed.

## Timeline

- 2026-11-10T19:25:06+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119992
- 2026-11-10T22:10:14+00:00 analyst https://advisories.checkpoint.com/defense/advisories/public/2026/cpai-2026-17598.html/ — MSRC page and NVD page returned no text; only secondary source (Check Point, affected product list, local EoP, CVSS 7.0 AV:L/AC:H/PR:L). No fix KB, build numbers, or exploitation info confirmed. Nothing marked verified. Revisit when the MSRC entry is readable.

## Documents

- [mentions] Check Point CPAI-2026-17598: Windows HTTP.sys EoP (CVE-2026-119992) https://advisories.checkpoint.com/defense/advisories/public/2026/cpai-2026-17598.html/

## From the sources

Double free in Windows HTTP.sys 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_