CVE-2009-1537
Microsoft DirectX NULL Byte Overwrite Vulnerability
IN CISA KEV
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.
- Vendor
- Microsoft
- Product
- DirectX
- CVSS
- No score recorded (no NVD record loaded for this entry)
- CWE
- Not recorded
- Published
- Not recorded
- NVD modified
- Not recorded
CISA KEV
- Date added
- 2026-05-20
- Due date
- 2026-06-03
- Ransomware use
- Unknown
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS
51.4% chance of exploitation in the next 30 days (percentile 98th)
FIRST EPSS, updated 17 Oct 2026. About EPSS
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.