A remote code execution vulnerability exists due to the way Windows Uniscribe handles objects in memory. An attacker who successfully exploited this vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
There are multiple ways an attacker could exploit this vulnerability:
In a web-based attack scenario, an attacker could host a specially crafted website designed to exploit this vulnerability and then convince a user to view the website. 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, typically by getting them to click a link in an email or instant message that takes users to the attacker's website, or by opening an attachment sent through email.
In a file-sharing attack scenario, an attacker could provide a specially crafted document file designed to exploit this vulnerability and then convince a user to open the document file.
The security update addresses the vulnerability by correcting how Windows Uniscribe handles objects in memory.
## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Microsoft Live Meeting 2007 Add-in | | [KB4025869](https://patchblox.com/security/data/fix/microsoft/kb4025869.md) | Sep 12, 2017 | | Microsoft | Microsoft Live Meeting 2007 Console | | [KB4025868](https://patchblox.com/security/data/fix/microsoft/kb4025868.md) | Sep 12, 2017 | | Microsoft | Microsoft Lync 2010 (32-bit) | | [KB4025865](https://patchblox.com/security/data/fix/microsoft/kb4025865.md) | Sep 12, 2017 | | Microsoft | Microsoft Lync 2010 (64-bit) | | [KB4025865](https://patchblox.com/security/data/fix/microsoft/kb4025865.md) | Sep 12, 2017 | | Microsoft | Microsoft Lync 2010 Attendee (admin level install) | | [KB4025866](https://patchblox.com/security/data/fix/microsoft/kb4025866.md) | Sep 12, 2017 | | Microsoft | Microsoft Lync 2010 Attendee (user level install) | | [KB4025867](https://patchblox.com/security/data/fix/microsoft/kb4025867.md) | Sep 12, 2017 | | Microsoft | Microsoft Lync 2013 Service Pack 1 (32-bit) | | [KB4011107](https://patchblox.com/security/data/fix/microsoft/kb4011107.md) | Sep 12, 2017 | | Microsoft | Microsoft Lync 2013 Service Pack 1 (64-bit) | | [KB4011107](https://patchblox.com/security/data/fix/microsoft/kb4011107.md) | Sep 12, 2017 | | Microsoft | Microsoft Lync Basic 2013 Service Pack 1 (32-bit) | | [KB4011107](https://patchblox.com/security/data/fix/microsoft/kb4011107.md) | Sep 12, 2017 | | Microsoft | Microsoft Lync Basic 2013 Service Pack 1 (64-bit) | | [KB4011107](https://patchblox.com/security/data/fix/microsoft/kb4011107.md) | Sep 12, 2017 | | Microsoft | Microsoft Office 2007 Service Pack 3 | | [KB3213649](https://patchblox.com/security/data/fix/microsoft/kb3213649.md) | Sep 12, 2017 | | Microsoft | Microsoft Office 2010 Service Pack 2 (32-bit editions) | | [KB3213631](https://patchblox.com/security/data/fix/microsoft/kb3213631.md) | Sep 12, 2017 | | Microsoft | Microsoft Office 2010 Service Pack 2 (64-bit editions) | | [KB3213631](https://patchblox.com/security/data/fix/microsoft/kb3213631.md) | Sep 12, 2017 | | Microsoft | Microsoft Office Web Apps 2010 Service Pack 2 | | [KB3213632](https://patchblox.com/security/data/fix/microsoft/kb3213632.md) | Sep 15, 2017 | | Microsoft | Microsoft Office Word Viewer | | [KB4011125](https://patchblox.com/security/data/fix/microsoft/kb4011125.md) | Sep 12, 2017 | | Microsoft | Skype for Business 2016 (32-bit) | | [KB4011040](https://patchblox.com/security/data/fix/microsoft/kb4011040.md) | Sep 12, 2017 | | Microsoft | Skype for Business 2016 (64-bit) | | [KB4011040](https://patchblox.com/security/data/fix/microsoft/kb4011040.md) | Sep 12, 2017 | | Microsoft | Skype for Business 2016 Basic (32-bit) | | [KB4011040](https://patchblox.com/security/data/fix/microsoft/kb4011040.md) | Sep 12, 2017 | | Microsoft | Skype for Business 2016 Basic (64-bit) | | [KB4011040](https://patchblox.com/security/data/fix/microsoft/kb4011040.md) | Sep 12, 2017 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4038779](https://patchblox.com/security/data/fix/microsoft/kb4038779.md) | Sep 12, 2017 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4038777](https://patchblox.com/security/data/fix/microsoft/kb4038777.md) | Sep 12, 2017 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4038779](https://patchblox.com/security/data/fix/microsoft/kb4038779.md) | Sep 12, 2017 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4038777](https://patchblox.com/security/data/fix/microsoft/kb4038777.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4038779](https://patchblox.com/security/data/fix/microsoft/kb4038779.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4038777](https://patchblox.com/security/data/fix/microsoft/kb4038777.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4038779](https://patchblox.com/security/data/fix/microsoft/kb4038779.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4038777](https://patchblox.com/security/data/fix/microsoft/kb4038777.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4038779](https://patchblox.com/security/data/fix/microsoft/kb4038779.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4038777](https://patchblox.com/security/data/fix/microsoft/kb4038777.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4039384](https://patchblox.com/security/data/fix/microsoft/kb4039384.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB4039384](https://patchblox.com/security/data/fix/microsoft/kb4039384.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4039384](https://patchblox.com/security/data/fix/microsoft/kb4039384.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4039384](https://patchblox.com/security/data/fix/microsoft/kb4039384.md) | Sep 12, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB4039384](https://patchblox.com/security/data/fix/microsoft/kb4039384.md) | Sep 12, 2017 | --- Data as of 2026-11-07T06:34:28Z 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