# CVE-2018-8113: Internet Explorer Security Feature Bypass Vulnerability

CVE-2018-8113 is fixed in 6 products on 1 platform, first by KB4284874, released June 12, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-8113
- Priority: Routine
- CVSS: 4.3 (Important)
- EPSS: 0.0590
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Jun 22, 2018
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8113

## Description

<p>A security feature bypass vulnerability exists in Internet Explorer that allows for bypassing Mark of the Web Tagging (MOTW). Failing to set the MOTW means that a large number of Microsoft security technologies are bypassed.</p> <p>In a web-based attack scenario, an attacker could host a malicious website that is designed to exploit the security feature bypass. Alternatively, in an email or instant message attack scenario, the attacker could send the targeted user a specially crafted .url file that is designed to exploit the bypass. Additionally, compromised websites or websites that accept or host user-provided content could contain specially crafted content to exploit the security feature bypass. However, in all cases an attacker would have no way to force a user to view attacker-controlled content. Instead, an attacker would have to convince a user to take action. For example, an attacker could entice a user to either click a link that directs the user to the attacker's site or send a malicious attachment.</p> <p>The security update addresses the security feature bypass by correcting how Internet Explorer handles MOTW tagging.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems | 15063.1155 | [KB4284874](https://patchblox.com/security/data/fix/microsoft/kb4284874.md) | Jun 12, 2018 |
| Microsoft | Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems | 15063.1155 | [KB4284874](https://patchblox.com/security/data/fix/microsoft/kb4284874.md) | Jun 12, 2018 |
| Microsoft | Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems | 16299.492 | [KB4284819](https://patchblox.com/security/data/fix/microsoft/kb4284819.md) | Jun 12, 2018 |
| Microsoft | Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems | 16299.492 | [KB4284819](https://patchblox.com/security/data/fix/microsoft/kb4284819.md) | Jun 12, 2018 |
| Microsoft | Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems | 17134.112 | [KB4284835](https://patchblox.com/security/data/fix/microsoft/kb4284835.md) | Jun 12, 2018 |
| Microsoft | Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems | 17134.112 | [KB4284835](https://patchblox.com/security/data/fix/microsoft/kb4284835.md) | Jun 12, 2018 |

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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