# CVE-2017-8703: Windows Subsystem for Linux Denial of Service Vulnerability

CVE-2017-8703 is fixed in Windows 10 Version 1703 for x64-based Systems on 1 platform by KB4041676 (version 15063.674), released October 10, 2017. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2017-8703
- Priority: Routine
- CVSS: 5.0 (Important)
- EPSS: 0.0168
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: yes
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Oct 10, 2017
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8703

## Description

<p>A denial of service vulnerability exists when Windows Subsystem for Linux improperly handles objects in memory. An attacker who successfully exploited this vulnerability could cause a denial of service against the local system.</p> <p>A attacker could exploit this vulnerability by running a specially crafted application.</p> <p>The update addresses the vulnerability by correcting how Windows Subsystem for Linux handles objects in memory.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.674 | [KB4041676](https://patchblox.com/security/data/fix/microsoft/kb4041676.md) | Oct 10, 2017 |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo