---
id: CVE-2019-1069
title: >-
  An elevation of privilege vulnerability exists in the way the Task Scheduler
  Service validates certain file operations
summary: >-
  An elevation of privilege vulnerability exists in the way the Task Scheduler
  Service validates certain file operations. An attacker who successfully
  exploited the vulnerability could gain elevated privileges on a victim system.

  To exploi…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-59
  - CWE-59
vendor: microsoft
product: windows_10_1507
affected:
  - windows_10_1507
  - windows_10_1607
  - windows_10_1703
  - windows_10_1709
  - windows_10_1803
  - windows_10_1809
  - windows_10_1903
  - windows_server_1803
  - windows_server_1903
  - windows_server_2016
  - windows_server_2019
published: '2019-06-12'
updated: '2026-08-12'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2019-1069'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1069'
    label: secure@microsoft.com
  - url: 'https://blog.0patch.com/2019/06/another-task-scheduler-0day-another.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1069
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.kb.cert.org/vuls/id/119704'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1069
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
epss: 0.06117
epssPercentile: 0.93193
kev: true
kevDateAdded: '2022-03-15'
kevDueDate: '2022-04-05'
kevRansomware: true
exploited: true
ingestedAt: '2026-08-12T05:52:07.134Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/S3cur3Th1sSh1t/SharpPolarBear'
  checkedAt: '2026-09-21T15:23:40.172Z'
exploitAvailable: true
---

## Overview

An elevation of privilege vulnerability exists in the way the Task Scheduler Service validates certain file operations. An attacker who successfully exploited the vulnerability could gain elevated privileges on a victim system.
To exploit the vulnerability, an attacker would require unprivileged code execution on a victim system.
The security update addresses the vulnerability by correctly validating file operations.

## Affected

- `windows_10_1507`
- `windows_10_1607`
- `windows_10_1703`
- `windows_10_1709`
- `windows_10_1803`
- `windows_10_1809`
- `windows_10_1903`
- `windows_server_1803`
- `windows_server_1903`
- `windows_server_2016`
- `windows_server_2019`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.