Microsoft Download Center Archive

Security Update for CAPICOM (KB931906)

  • Published:
  • Version: 1
  • Category: Undefined
  • Language: English

Security update for the redistributable component CAPICOM for versions prior to

  • A remote code execution vulnerability exists in Cryptographic API Component Object Model (CAPICOM) that allows an attacker who successfully exploits this vulnerability to take complete control of an affected system. CAPICOM can be used as a component of a 3rd party webpage, script or application. You can protect your computer by installing this update from Microsoft.
Knowledge Base Articles:
Security Bulletins:


Status: Deleted

This download is no longer available on The downloads below are archives provided by the Internet Archive Wayback Machine from the Microsoft Download Center prior to August 2020.

FileSHA1 HashSize
CAPICOM-KB931906-v2102.exe5891b5de8ce331dc998656e20f1ce0b795e88786336 KB

System Requirements

Operating Systems: Windows 2000 Service Pack 4, Windows Server 2003 Service Pack 1, Windows Server 2003 Service Pack 2, Windows Vista, Windows XP Service Pack 2

  • Note: This update requires Windows Installer versions 3.0 or greater. Unpatched versions of Windows 2000 SP4 must be updated for this release to successfully install.

Installation Instructions

    1. Click the Download button on this page to start the download and click Go.
    2. Do one of the following:
      • To start the installation immediately, click Open or Run this program from its current location.
      • To copy the download to your computer for installation at a later time, click Save or Save this program to disk.

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