# CVE-2017-8643: Microsoft Edge Information Disclosure Vulnerability

CVE-2017-8643 is fixed in 9 products on 1 platform, first by KB4038783, released September 12, 2017. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2017-8643
- Priority: Urgent
- CVSS: 2.4 (Low)
- EPSS: 0.0584
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation More Likely
- Published: Sep 12, 2017
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8643

## Description

<p>An information disclosure vulnerability exists when Microsoft Edge improperly handles clipboard events.</p> <p>For an attack to be successful, an attacker must persuade a user to visit a malicious website and leave it open during clipboard activities.</p> <p>The update addresses the vulnerability by changing how Microsoft Edge handles clipboard events in the browser.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for 32-bit Systems | 10586.1106 | [KB4038783](https://patchblox.com/security/data/fix/microsoft/kb4038783.md) | Sep 12, 2017 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for x64-based Systems | 10586.1106 | [KB4038783](https://patchblox.com/security/data/fix/microsoft/kb4038783.md) | Sep 12, 2017 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems | 14393.1715 | [KB4038782](https://patchblox.com/security/data/fix/microsoft/kb4038782.md) | Sep 12, 2017 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems | 14393.1715 | [KB4038782](https://patchblox.com/security/data/fix/microsoft/kb4038782.md) | Sep 12, 2017 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems | 15063.608 | [KB4038788](https://patchblox.com/security/data/fix/microsoft/kb4038788.md) | Sep 12, 2017 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems | 15063.608 | [KB4038788](https://patchblox.com/security/data/fix/microsoft/kb4038788.md) | Sep 12, 2017 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems | 10240.17609 | [KB4038781](https://patchblox.com/security/data/fix/microsoft/kb4038781.md) | Sep 12, 2017 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems | 10240.17609 | [KB4038781](https://patchblox.com/security/data/fix/microsoft/kb4038781.md) | Sep 12, 2017 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows Server 2016 | 14393.1715 | [KB4038782](https://patchblox.com/security/data/fix/microsoft/kb4038782.md) | Sep 12, 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