MS15-053: Description of the security update for VBScript and JScript 5.7: May 12, 2015

This security update resolves address space layout randomization (ASLR) security feature bypasses in the JScript and VBScript scripting engines in Microsoft Windows. An attacker could use one of these ASLR bypasses together with another vulnerability, such as a remote code execution vulnerability, to more reliably run arbitrary code on a target system. 

The update addresses the ASLR bypasses by helping to make sure that affected versions of JScript and VBScript correctly implement the ASLR security feature.

Microsoft has released security bulletin MS15-053. To learn more about this security bulletin:

• Home users:
  
  https://www.microsoft.com/security/pc-security/updates.aspx
  Skip the details: Download the updates for your home computer or laptop from the Microsoft Update website now:
  
  https://update.microsoft.com/microsoftupdate/
• IT professionals:
  
  https://technet.microsoft.com/library/security/MS15-053

How to obtain help and support for this security update

Help installing updates:
Support for Microsoft Update

Security solutions for IT professionals:
TechNet Security Troubleshooting and Support

Help protect your Windows-based computer from viruses and malware:
Virus Solution and Security Center

Local support according to your country:
International Support

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 and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.