CVE-2021-43471

Name: CVE-2021-43471
Creator: NVD / NIST
Published: 2021-12-06T13:15:07.41+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.44%

Last modified Jun 17, 2026

CVE-2021-43471 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.44% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.44%

69.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-521

Affected Software

Vendor	Product	Versions
Canon	Lbp223dw Firmware	All versions

References

https://github.com/cxaqhq/cve-1Exploit, Third Party Advisory
https://github.com/cxaqhq/cve-1Exploit, Third Party Advisory

Timeline

Published: Dec 6, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43471?

How severe is CVE-2021-43471?

CVE-2021-43471 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.44% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43471?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-43471?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST