Description of the security update for Skype for Business 2015 (Lync 2013): November 13, 2018

Applies to: Skype for Business 2015


This security update resolves vulnerabilities in Microsoft Office that could allow remote code execution if a user opens a specially crafted Office file. To learn more about these vulnerabilities, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8546.

Note To apply this security update, see the prerequisites.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2013. It doesn't apply to the Office 2013 Click-to-Run editions, such as Microsoft Office 365 Home (see Determining your Office version).

How to get and install the update

Method 1: Microsoft Update
This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.
Method 2: Microsoft Update Catalog
To get the stand-alone package for this update, go to the Microsoft Update Catalog website.
Method 3: Microsoft Download Center
You can get the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

More Information


Before you install this update, you must install Microsoft Office 2013 Service Pack 1 (KB 2817430).

Additionally, to install this update, you must have the following updates installed.

Update Download link
June 13, 2017, Lynchelploc update for Lync 2015 (Skype for Business) (KB 3191937) Download Download the 32-bit Lynchelploc update package now.

Download Download the 64-bit Lynchelploc update package now.

June 9, 2015, update for Office 2013 (KB 3054853)

Note You don't have to apply update 3054853 if you applied the April 14, 2015, update (KB 2889923) or the May 12, 2015, security update (KB 3039779) for Lync 2013 (Skype for Business).

Download Download the 32-bit mso update package now.

Download Download the 64-bit mso update package now.
Security update deployment information

For deployment information about this update, see security update deployment information: November 13, 2018.

Security update replacement information

This security update replaces previously released security update KB 4022225.

File hash information
File name SHA1 hash SHA256 hash
lync2013-kb4461487-fullfile-x86-glb.exe 60518AC3EE17ADF3886C218CABDDD06159FC79ED E3895F9F4A2E781A0047385796C5A7A102CF98E1D36BE3B0CB44A752D3936726
lync2013-kb4461487-fullfile-x64-glb.exe 783B2210F6BE56A06EDDBB193823FA6405635356 E1BA854A8AE30D42099A68A8C468E91C2926F841CC0D6D985E1E2F7DDB0BD70F
File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

How to get help and support for this security update

Protect yourself online and at home: Windows Security support
Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure
Local support according to your country: International Support