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CVE-2009-1537: Microsoft DirectX NULL Byte Overwrite Vulnerability
Microsoft DirectX · in CISA KEV since 2026-05-20
2026-05-20added to KEV
2026-06-03federal remediation due date
51.21%EPSS exploit probability (30 days) 98.9th percentile
8.8 HIGHCVSS 3.1
Unknownknown ransomware use
6,200days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-158 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD published | 2009-05-29 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2009-1537.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.