---
id: "CVE-2026-95894"
page: "https://infrastack.ai/live/CVE-2026-95894"
kind: "vulnerability"
aliases: ["CVE-2026-95894"]
title: "Windows Task Scheduler: heap overflow lets a local user gain higher privileges"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Windows 10 Version 1607 / Server 2016", "fixed": ["10.0.14393.9688"], "affected": ">= 10.0.14393.0, < 10.0.14393.9688", "ecosystem": "microsoft"}, {"name": "Windows 10 Version 1809 / Server 2019", "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"}, {"name": "Windows 11 25H2", "fixed": ["10.0.26200.9974"], "affected": ">= 10.0.26200.0, < 10.0.26200.9974", "ecosystem": "microsoft"}, {"name": "Windows 11 26H1", "fixed": ["10.0.28000.3501"], "affected": ">= 10.0.28000.0, < 10.0.28000.3501", "ecosystem": "microsoft"}, {"name": "Windows 11 26H2", "fixed": ["10.0.26300.9974"], "affected": ">= 10.0.26300.0, < 10.0.26300.9974", "ecosystem": "microsoft"}, {"name": "Windows Server 2022", "fixed": ["10.0.20348.5870"], "affected": ">= 10.0.20348.0, < 10.0.20348.5870", "ecosystem": "microsoft"}, {"name": "Windows Server 2025", "fixed": ["10.0.26100.33822"], "affected": ">= 10.0.26100.0, < 10.0.26100.33822", "ecosystem": "microsoft"}]
ecosystems: []
tags: ["heap-overflow", "infrastructure", "local-privilege-escalation", "task-scheduler", "windows"]
not_affected_if: ["no-local-users", "patched-build"]
published_at: "2026-11-10T19:21:42+00:00"
first_seen_at: "2026-11-10T19:25:23+00:00"
updated_at: "2026-11-10T20:28:29+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-95894", "first_seen_at": "2026-11-10T19:25:23+00:00"}, {"source": "analyst", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-95894", "first_seen_at": "2026-11-10T20:28:29+00:00", "cites": ["https://nvd.nist.gov/vuln/detail/CVE-2026-95894"]}]
exploit_sources: []
---

# Windows Task Scheduler: heap overflow lets a local user gain higher privileges

Link for people: https://infrastack.ai/live/CVE-2026-95894 (this .md is for agents)

A heap-based buffer overflow in the Windows Task Scheduler lets an authorized local user elevate their privileges. An attacker who already has a logon on the machine can gain higher rights than they were granted.

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

## Affected

- microsoft:Windows 10 Version 1607 / Server 2016 affected >= 10.0.14393.0, < 10.0.14393.9688 fixed 10.0.14393.9688
- microsoft:Windows 10 Version 1809 / Server 2019 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
- microsoft:Windows 11 25H2 affected >= 10.0.26200.0, < 10.0.26200.9974 fixed 10.0.26200.9974
- microsoft:Windows 11 26H1 affected >= 10.0.28000.0, < 10.0.28000.3501 fixed 10.0.28000.3501
- microsoft:Windows 11 26H2 affected >= 10.0.26300.0, < 10.0.26300.9974 fixed 10.0.26300.9974
- microsoft:Windows Server 2022 affected >= 10.0.20348.0, < 10.0.20348.5870 fixed 10.0.20348.5870
- microsoft:Windows Server 2025 affected >= 10.0.26100.0, < 10.0.26100.33822 fixed 10.0.26100.33822

## How to check

Run 'winver' or PowerShell '[System.Environment]::OSVersion.Version' and compare the build (10.0.x.y) with the fixed build for your Windows version; lower means exposed.

## Fix

Install the November 2026 Windows cumulative update that brings your build to at least the fixed build for your version (e.g. Win 11 24H2 10.0.26100.9974, Win 10 22H2 10.0.19045.7846, Server 2022 10.0.20348.5870, Server 2025 10.0.26100.33822).

## Timeline

- 2026-11-10T19:25:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-95894
- 2026-11-10T20:28:29+00:00 analyst https://nvd.nist.gov/vuln/detail/CVE-2026-95894 — Affected builds and fixed builds taken from NVD (Microsoft CNA data). The MSRC page returned no text, so nothing is marked verified. No exploitation or PoC found in sources read; I did not search social posts.

## Documents

- [describes] NVD CVE-2026-95894 (Microsoft CNA data) https://nvd.nist.gov/vuln/detail/CVE-2026-95894

## From the sources

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

---

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