An information disclosure vulnerability exists when Internet Explorer improperly handles page content, which could allow an attacker to detect the existence of specific files on the user's system.
To exploit the vulnerability, in a web-based attack scenario, an attacker could host a website that is used to 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. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action. For example, an attacker could trick users into clicking a link that takes them to the attacker's site.
The security update addresses the vulnerability by helping to ensure that page content is properly validated in Internet Explorer.
## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Internet Explorer 11 on Windows 10 Version 1511 for 32-bit Systems | 10586.494 | [KB3172985](https://patchblox.com/security/data/fix/microsoft/kb3172985.md) | Jul 12, 2016 | | Microsoft | Internet Explorer 11 on Windows 10 Version 1511 for x64-based Systems | 10586.494 | [KB3172985](https://patchblox.com/security/data/fix/microsoft/kb3172985.md) | Jul 12, 2016 | | Microsoft | Internet Explorer 11 on Windows 10 for 32-bit Systems | 10240.17024 | [KB3163912](https://patchblox.com/security/data/fix/microsoft/kb3163912.md) | Jul 12, 2016 | | Microsoft | Internet Explorer 11 on Windows 10 for x64-based Systems | 10240.17024 | [KB3163912](https://patchblox.com/security/data/fix/microsoft/kb3163912.md) | Jul 12, 2016 | | Microsoft | Internet Explorer 11 on Windows 8.1 for 32-bit systems | | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 | | Microsoft | Internet Explorer 11 on Windows 8.1 for x64-based systems | | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 | | Microsoft | Internet Explorer 11 on Windows RT 8.1 | | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 | | Microsoft | Internet Explorer 11 on Windows Server 2012 R2 | | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 | --- 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.