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high8.8Known exploited

CVE-2009-1537

Microsoft DirectX NULL Byte Overwrite Vulnerability

Exploited in the wild

This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-05-20. Federal due date: 2026-06-03.

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Impact

Microsoft DirectX contains a NULL byte overwrite vulnerability in the QuickTime Movie Parser Filter in quartz.dll in DirectShow which could allow remote attackers to execute arbitrary code via a crafted QuickTime media file.

Affected products

VendorProductAffected versions
MicrosoftDirectx
Versions 7.0, 7.0a, 7.1, 8.1, 8.1b, 9.0
MicrosoftWindows 2000
All versions
MicrosoftWindows 2003 Server
All versions
MicrosoftWindows Server 2003
All versions
MicrosoftWindows Xp
All versions

Weakness classification

References