CVE-2009-0084: Microsoft DirectX

High severity, CVSS 9.3. EPSS: 31.8% chance of exploitation in the next 30 days.

Use-after-free vulnerability in DirectShow in Microsoft DirectX 8.1 and 9.0 allows remote attackers to execute arbitrary code via an MJPEG file or video stream with a malformed Huffman table, which triggers an exception that frees heap memory that is later accessed, aka "MJPEG Decompression Vulnerability."

Affected products

• Microsoft DirectX: version 8.1 only; version 9.0 only; version 9.0a only; version 9.0b only; version 9.0c only

Published 2009-04-15. Last modified 2026-06-16.