Unspecified vulnerability in the QuickTime Movie Parser Filter in quartz.dll in DirectShow in Microsoft DirectX 7.0 through 9.0c on Windows 2000 SP4, Windows XP SP2 and SP3, and Windows Server 2003 SP2 allows remote attackers to execute arbitrary code via a crafted QuickTime media file, as exploited in the wild in May 2009, aka "DirectX NULL Byte Overwrite Vulnerability."
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HMicrosoft Directx
APPMicrosoft7.07.0a7.18.18.1b9.09.0a9.0b9.0cMicrosoft Windows 2000
OSMicrosoftall versionsMicrosoft Windows 2003 Server
OSMicrosoftall versionsMicrosoft Windows Server 2003
OSMicrosoftall versionsMicrosoft Windows Xp
OSMicrosoftall versions
CISA KEV — detailsi
- Vendori
- Microsoft ↗
- Producti
- DirectX
- Added to KEVi
- May 20, 2026
- Remediation deadline (US Federal)i
- June 3, 2026(overdue)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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.
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