# CVE-2019-0612: Microsoft Edge Security Feature Bypass Vulnerability

CVE-2019-0612 is fixed in 12 products on 1 platform, first by KB4489871, released March 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-2019-0612
- Priority: Urgent
- CVSS: 4.3 (Important)
- EPSS: 0.1051
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation More Likely
- Published: Mar 12, 2019
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0612

## Description

<p>A security feature bypass vulnerability exists when Click2Play protection in Microsoft Edge improperly handles flash objects.</p> <p>By itself, this bypass vulnerability does not allow arbitrary code execution. However, an attacker could use the bypass vulnerability in conjunction with another vulnerability, such as a remote code execution vulnerability, to run arbitrary code on a target system.</p> <p>To exploit the CFG bypass vulnerability, a user must be logged on and running an affected version of Microsoft Edge. The user would then need to browse to a malicious website.</p> <p>The security update addresses the bypass vulnerability by helping to ensure that Click2Play protection Microsoft Edge properly handles flash objects.</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 | 15063.1689 | [KB4489871](https://patchblox.com/security/data/fix/microsoft/kb4489871.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems | 15063.1689 | [KB4489871](https://patchblox.com/security/data/fix/microsoft/kb4489871.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems | 16299.1029 | [KB4489886](https://patchblox.com/security/data/fix/microsoft/kb4489886.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for ARM64-based Systems | 16299.1029 | [KB4489886](https://patchblox.com/security/data/fix/microsoft/kb4489886.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems | 16299.1029 | [KB4489886](https://patchblox.com/security/data/fix/microsoft/kb4489886.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems | 17134.648 | [KB4489868](https://patchblox.com/security/data/fix/microsoft/kb4489868.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems | 17134.648 | [KB4489868](https://patchblox.com/security/data/fix/microsoft/kb4489868.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems | 17134.648 | [KB4489868](https://patchblox.com/security/data/fix/microsoft/kb4489868.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems | 17763.379 | [KB4489899](https://patchblox.com/security/data/fix/microsoft/kb4489899.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems | 17763.379 | [KB4489899](https://patchblox.com/security/data/fix/microsoft/kb4489899.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems | 17763.379 | [KB4489899](https://patchblox.com/security/data/fix/microsoft/kb4489899.md) | Mar 12, 2019 |
| Microsoft | Microsoft Edge (EdgeHTML-based) on Windows Server 2019 | 17763.379 | [KB4489899](https://patchblox.com/security/data/fix/microsoft/kb4489899.md) | Mar 12, 2019 |

---

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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.