# CVE-2018-0942: Internet Explorer Elevation of Privilege Vulnerability CVE-2018-0942 is fixed in 16 products on 1 platform, first by KB4088779, released March 13, 2018. 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-2018-0942 - Priority: Urgent - CVSS: 3.0 (Important) - EPSS: 0.0308 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation More Likely - Published: Mar 13, 2018 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-0942 ## Description

An elevation of privilege vulnerability exists when Internet Explorer fails a check, allowing sandbox escape. An attacker who successfully exploited the vulnerability could use the sandbox escape to elevate privileges on an affected system.

This vulnerability by itself does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability (such as a remote code execution vulnerability or another elevation of privilege vulnerability) that is capable of leveraging the elevated privileges when code execution is attempted.

The update addresses the vulnerability by correcting how Internet Explorer handles zone and integrity settings.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Internet Explorer 11 on Windows 10 Version 1511 for 32-bit Systems | 10586.1478 | [KB4088779](https://patchblox.com/security/data/fix/microsoft/kb4088779.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 10 Version 1511 for x64-based Systems | 10586.1478 | [KB4088779](https://patchblox.com/security/data/fix/microsoft/kb4088779.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems | | [KB4088787](https://patchblox.com/security/data/fix/microsoft/kb4088787.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems | | [KB4088787](https://patchblox.com/security/data/fix/microsoft/kb4088787.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems | | [KB4088782](https://patchblox.com/security/data/fix/microsoft/kb4088782.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems | | [KB4088782](https://patchblox.com/security/data/fix/microsoft/kb4088782.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 10 for 32-bit Systems | 10240.17797 | [KB4088786](https://patchblox.com/security/data/fix/microsoft/kb4088786.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 10 for x64-based Systems | 10240.17797 | [KB4088786](https://patchblox.com/security/data/fix/microsoft/kb4088786.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4088875](https://patchblox.com/security/data/fix/microsoft/kb4088875.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 | | [KB4096040](https://patchblox.com/security/data/fix/microsoft/kb4096040.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4088875](https://patchblox.com/security/data/fix/microsoft/kb4088875.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 | | [KB4096040](https://patchblox.com/security/data/fix/microsoft/kb4096040.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 8.1 for 32-bit systems | | [KB4089187](https://patchblox.com/security/data/fix/microsoft/kb4089187.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 8.1 for 32-bit systems | | [KB4088876](https://patchblox.com/security/data/fix/microsoft/kb4088876.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 8.1 for x64-based systems | | [KB4089187](https://patchblox.com/security/data/fix/microsoft/kb4089187.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows 8.1 for x64-based systems | | [KB4088876](https://patchblox.com/security/data/fix/microsoft/kb4088876.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows RT 8.1 | | [KB4088876](https://patchblox.com/security/data/fix/microsoft/kb4088876.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4088875](https://patchblox.com/security/data/fix/microsoft/kb4088875.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4096040](https://patchblox.com/security/data/fix/microsoft/kb4096040.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows Server 2012 R2 | | [KB4089187](https://patchblox.com/security/data/fix/microsoft/kb4089187.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows Server 2012 R2 | | [KB4088876](https://patchblox.com/security/data/fix/microsoft/kb4088876.md) | Mar 13, 2018 | | Microsoft | Internet Explorer 11 on Windows Server 2016 | | [KB4088787](https://patchblox.com/security/data/fix/microsoft/kb4088787.md) | Mar 13, 2018 | --- 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.