---
id: "CVE-2026-95888"
page: "https://infrastack.ai/live/CVE-2026-95888"
kind: "vulnerability"
aliases: ["CVE-2026-95888"]
title: "Windows Graphics Kernel: heap overflow lets a local user gain higher privileges"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows 10 1809", "fixed": ["10.0.17763.9487"], "affected": ">= 10.0.17763.0, < 10.0.17763.9487", "ecosystem": "microsoft"}, {"name": "Windows 10 21H2", "fixed": ["10.0.19044.7846"], "affected": ">= 10.0.19044.0, < 10.0.19044.7846", "ecosystem": "microsoft"}, {"name": "Windows 10 22H2", "fixed": ["10.0.19045.7846"], "affected": ">= 10.0.19045.0, < 10.0.19045.7846", "ecosystem": "microsoft"}, {"name": "Windows 11 23H2", "fixed": ["10.0.22631.7711"], "affected": ">= 10.0.22631.0, < 10.0.22631.7711", "ecosystem": "microsoft"}, {"name": "Windows 11 24H2", "fixed": ["10.0.26100.9974"], "affected": ">= 10.0.26100.0, < 10.0.26100.9974", "ecosystem": "microsoft"}]
ecosystems: []
tags: ["graphics-kernel", "infrastructure", "local-privilege-escalation", "windows", "windows-10", "windows-11"]
not_affected_if: ["no-local-untrusted-users", "patched-build"]
published_at: "2026-11-10T19:21:42+00:00"
first_seen_at: "2026-11-10T19:25:22+00:00"
updated_at: "2026-11-10T20:30:54+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-95888", "first_seen_at": "2026-11-10T19:25:22+00:00"}, {"source": "analyst", "url": "https://radar.offseq.com/threat/cve-2026-95888-cwe-122-heap-based-buffer-overflow-in-microsoft-windows-10-version-1809-7275edda2d89fbc8", "first_seen_at": "2026-11-10T20:30:54+00:00", "cites": ["https://radar.offseq.com/threat/cve-2026-95888-cwe-122-heap-based-buffer-overflow-in-microsoft-windows-10-version-1809-7275edda2d89fbc8"]}]
exploit_sources: []
---

# Windows Graphics Kernel: heap overflow lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-95888 (this .md is for agents)

Heap-based buffer overflow (CWE-122) in the Windows Graphics Kernel lets an attacker who already has a low-privileged local account elevate privileges. CVSS 3.1 7.0 (AV:L/AC:H/PR:L/UI:N), set by Microsoft. No exploitation or public proof of concept was found as of 10 Nov 2026; Microsoft's own page could not be read, so the builds come from a mirror of the Microsoft CVE record.

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

## Affected

- microsoft:Windows 10 1809 affected >= 10.0.17763.0, < 10.0.17763.9487 fixed 10.0.17763.9487
- microsoft:Windows 10 21H2 affected >= 10.0.19044.0, < 10.0.19044.7846 fixed 10.0.19044.7846
- microsoft:Windows 10 22H2 affected >= 10.0.19045.0, < 10.0.19045.7846 fixed 10.0.19045.7846
- microsoft:Windows 11 23H2 affected >= 10.0.22631.0, < 10.0.22631.7711 fixed 10.0.22631.7711
- microsoft:Windows 11 24H2 affected >= 10.0.26100.0, < 10.0.26100.9974 fixed 10.0.26100.9974

## How to check

Run winver (or PowerShell: [System.Environment]::OSVersion.Version) and compare the full build.revision with the fixed build for your release: Win10 1809 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. The mirror lists 9 fixed builds and shows only 6. Also check Win11 25H2 and Windows Server against the Microsoft Security Update Guide for CVE-2026-95888.

## Fix

Install the November 2026 Windows cumulative update that brings your release to the fixed build above (Windows Update or WSUS). Builds were read from a mirror of the CNA record, not from Microsoft's page.

## Timeline

- 2026-11-10T19:25:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-95888
- 2026-11-10T20:30:54+00:00 analyst https://radar.offseq.com/threat/cve-2026-95888-cwe-122-heap-based-buffer-overflow-in-microsoft-windows-10-version-1809-7275edda2d89fbc8 — B pass. MSRC and NVD pages returned no content to web-cli/WebFetch, so nothing marked verified. Builds/CVSS from OffSeq mirror of the Microsoft CNA record (6 of 9 fixed builds shown; 25H2/Server missing). No exploitation or PoC found. X skipped per notes (credits depleted). Revisit when MSRC is readable.

## Documents

- [describes] OffSeq Threat Radar: CVE-2026-95888 (mirror of Microsoft CNA record) https://radar.offseq.com/threat/cve-2026-95888-cwe-122-heap-based-buffer-overflow-in-microsoft-windows-10-version-1809-7275edda2d89fbc8

## From the sources

Heap-based buffer overflow in Windows Graphics Kernel 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_