Microsoft DirectX NULL Byte Overwrite Vulnerability

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• NewsExploited · CISA KEVMicrosoft · DirectX

  Microsoft DirectX NULL Byte Overwrite Vulnerability

  CVE-2009-1537

  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.

  CISA's required action · due 3 Jun 2026 for U.S. federal civilian agencies

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

  Cited by CISA: learn.microsoft.com · nvd.nist.gov

  Added to KEV 20 May 2026 · Source checked 4 Nov 2026, 16:35 UTC · CISA KEV entry

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