What’s Vulnerable › Vulnerabilities

CVE-2009-1537: Microsoft DirectX NULL Byte Overwrite Vulnerability

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: yes — in CISA KEV since 2026-05-20
• EPSS: 51.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2009-05-29 · updated 2026-06-16
• Weakness: CWE-158

Description

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."

Affected products

• Microsoft Directx: 7.0, 7.0a, 7.1, 8.1, 8.1b, 9.0 (+3)
• Microsoft Windows 2000: all versions
• Microsoft Windows 2003 Server: all versions
• Microsoft Windows Server 2003: all versions
• Microsoft Windows XP Service Pack 3: all versions

References

• http://blogs.technet.com/msrc/archive/2009/05/28/microsoft-security-advisory-971778-vulnerability-in-microsoft-directshow-released.aspx
• http://blogs.technet.com/srd/archive/2009/05/28/new-vulnerability-in-quicktime-parsing.aspx
• http://isc.sans.org/diary.html?storyid=6481
• http://osvdb.org/54797
• http://secunia.com/advisories/35268
• http://www.microsoft.com/technet/security/advisory/971778.mspx
• http://www.securityfocus.com/bid/35139
• http://www.securitytracker.com/id?1022299
• http://www.us-cert.gov/cas/techalerts/TA09-195A.html
• http://www.vupen.com/english/advisories/2009/1445
• http://www.vupen.com/english/advisories/2009/1886
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-028

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