Exploited Vulnerabilities DailyCVE-2009-1537: Microsoft DirectX
EPSS51.2%No. 860 of 1739 in KEV
CVE year2009~17 yrs before listing
Same vendor in KEV389
Same product1
| Field | Value |
|---|---|
| Vendor | Microsoft |
| Product | DirectX |
| Name | Microsoft DirectX NULL Byte Overwrite Vulnerability |
| Added to KEV | 2026-05-20 |
| US federal due date | 2026-06-03 |
| Ransomware use | Unknown |
| CWE | – |
CISA description
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.
Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page
A Microsoft DirectX vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2026-05-20.