Vulnerability Intelligence Report
Microsoft DirectX NULL Byte Overwrite Vulnerability
CVE-2009-1537
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."
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
EPSS Probability:50.93%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-158 ↗CWE-158 Improper Neutralization of Null Byte or NUL Character
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| microsoft | directx | 7.0, 7.0a, 7.1, 8.1, 8.1b, 9.0, 9.0a, 9.0b, 9.0c |
| microsoft | windows_2000 | all |
| microsoft | windows_2003_server | all |
| microsoft | windows_server_2003 | all |
| microsoft | windows_xp | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2009-05-05T00:00:00 |
| Published | 2009-05-29T18:00:00 |
| Patch Date | 2009-05-28 |
| Last Updated | 2026-05-21T03:55:22 |
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