Windows Media Player ASF Unchecked Buffer Vulnerability

Used Windows Media Player ASF Unchecked Buffer Vulnerability for Windows?

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Editors’ Review

Download.com staffFebruary 25, 2026

This crucial update patches two major security vulnerabilities and a privacy concern within Windows Media Player, enhancing user protection.

Pros
- Fixes buffer overrun vulnerability in ASX file handling.
- Addresses vulnerability in Internet shortcut processing.
- Patches a recently identified privacy vulnerability.
- Supports Windows Media Player versions 6.4, 7, and 7.1.
Cons
No Cons available

Windows Media Player ASF Unchecked Buffer Vulnerability

Used Windows Media Player ASF Unchecked Buffer Vulnerability for Windows?

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Full Specifications

GENERAL

Release: December 12, 2001

Latest update: February 25, 2026

Version: MS01-056

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 10
Windows 95
Windows ME
Windows NT
Windows 98
Windows XP
Windows 2000

Additional Requirements: Microsoft Windows Media Player 6.4

POPULARITY

Total Downloads: 202,230

Downloads Last Week: 0

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User Reviews

3.5/5

13 User Votes

Not installed properly
devjohnDecember 17, 2008
Pros
Problem in installation
Cons
Not installed properly
Summary
its an important add-on
June 7, 2002
Pros
Cons
Summary
9/3/2002
March 8, 2002
Pros
Cons
Summary
Makes me feel safer whe using program.
super ease and very affective
March 8, 2002
Pros
Cons
Summary
March 2, 2002
Pros
Cons
Summary
Can't get it to run.
VERY IMPORTANT PATCH
February 24, 2002
Pros
Cons
Summary
This fixes a problem when a malicious user can purposly crash the application and while it's crashed, he can send a virus such as Nimbda or Code Red. This will eventually allow him FULL ADMINISTRATIVE RIGHTS to your entire network domain. The main threat applies to Windows NT/2000, since there is not really any "file level security" on Windows 9x/XP Home Edition.
Doesn't Work
February 19, 2002
Pros
Cons
Summary
It said, it didn't installed properly.
Excellent
January 19, 2002
Pros
Cons
Summary
cool tool
January 11, 2002
Pros
Cons
Summary
This Media is too slow
December 26, 2001
Pros
Cons
Summary

Developer’s Description

Patch two security vulnerabilities in Windows Media Player.

This update addresses two security vulnerabilities in Windows Media Player. The two vulnerabilities are a buffer overrun in the functionality used to process Active Stream Redirector (.ASX) files, and a vulnerability affecting how Windows Media Player handles Internet shortcuts. In addition, this update addresses a potential privacy vulnerability that was recently identified. This patch should be used with Windows Media Player 6.4, 7, or 7.1.