CVE-2023-0851

9.8 CRITICAL 1% exploit odds No fix listed Memory safety Device

What it is

Buffer overflow in CPCA Resource Download process of Office / Small Office Multifunction Printers and Laser Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code. *:Satera LBP660C Series/LBP620C Series/MF740C Series/MF640C Series firmware Ver.11.04 and earlier sold in Japan. Color imageCLASS LBP660C Series/LBP 620C Series/X LBP1127C/MF740C Series/MF640C Series/X MF1127C firmware Ver.11.04 and earlier sold in US. i-SENSYS LBP660C Series/LBP620C Series/MF740C Series/MF640C Series, C1127P, C1127iF, C1127i firmware Ver.11.04 and earlier sold in Europe.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 1.1% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2023-02-16 00:00 UTC ReservedThe CVE id was reserved by its CNA
2023-05-11 13:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 05:26 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.1% in the next 30 days (EPSS).
Severity: 9.8 CRITICAL (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2023-05-11 13:15 UTC
Last modified: 2026-06-17 05:26 UTC
Exploit probability: 1.1% · EPSS, next 30 days
Weakness: CWE-122
Record status: Modified

Affected

Canon mf642cdw Firmware ≤ 11.04
Canon mf644cdw Firmware ≤ 11.04
Canon mf741cdw Firmware ≤ 11.04
Canon mf743cdw Firmware ≤ 11.04
Canon mf745cdw Firmware ≤ 11.04
Canon lbp621c Firmware ≤ 11.04
Canon lbp622c Firmware ≤ 11.04
Canon lbp661c Firmware ≤ 11.04

Attack profile CVSS 3.1 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

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

Is it in your code?

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References

NVD record · CVE.org record