# CVE-2019-0658: Scripting Engine Information Disclosure Vulnerability

CVE-2019-0658 is fixed in 12 products on 1 platform, first by KB4487020, released February 12, 2019. 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-2019-0658
- Priority: Urgent
- CVSS: 4.3 (Important)
- EPSS: 0.0771
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation More Likely
- Published: Feb 12, 2019
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0658

## Description

<p>An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft Edge. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system.</p> <p>In a web-based attack scenario, an attacker could host a website in an attempt to exploit the vulnerability. In addition, compromised websites and websites that accept or host user-provided content could contain specially crafted content that could exploit the vulnerability. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action. For example, an attacker could trick a user into clicking a link that takes the user to the attacker's site.</p> <p>The security update addresses the vulnerability by changing how the scripting engine handles objects in memory.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems | 15063.1631 | [KB4487020](https://patchblox.com/security/data/fix/microsoft/kb4487020.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems | 15063.1631 | [KB4487020](https://patchblox.com/security/data/fix/microsoft/kb4487020.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems | 16299.967 | [KB4486996](https://patchblox.com/security/data/fix/microsoft/kb4486996.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for ARM64-based Systems | 16299.967 | [KB4486996](https://patchblox.com/security/data/fix/microsoft/kb4486996.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems | 16299.967 | [KB4486996](https://patchblox.com/security/data/fix/microsoft/kb4486996.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems | 17134.590 | [KB4487017](https://patchblox.com/security/data/fix/microsoft/kb4487017.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems | 17134.590 | [KB4487017](https://patchblox.com/security/data/fix/microsoft/kb4487017.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems | 17134.590 | [KB4487017](https://patchblox.com/security/data/fix/microsoft/kb4487017.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems | 17763.316 | [KB4487044](https://patchblox.com/security/data/fix/microsoft/kb4487044.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems | 17763.316 | [KB4487044](https://patchblox.com/security/data/fix/microsoft/kb4487044.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems | 17763.316 | [KB4487044](https://patchblox.com/security/data/fix/microsoft/kb4487044.md) | Feb 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows Server 2019 | 17763.316 | [KB4487044](https://patchblox.com/security/data/fix/microsoft/kb4487044.md) | Feb 12, 2019 |

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Data as of 2026-11-07T18:46:35Z 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

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