CVE-2021-43471
CVSS v3
7.5
HIGH
EPSS Score
1.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2021-12-06
Frequently asked questions
What is CVE-2021-43471?
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.
Is CVE-2021-43471 actively exploited?
Active exploitation of CVE-2021-43471 has not been confirmed. Its EPSS score was 1.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-43471?
CVE-2021-43471 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2021-43471 affecting your environment?
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