Is CVE-2023-6234 actively exploited?

No active exploitation of CVE-2023-6234 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-6234 be exploited remotely?

Yes. CVE-2023-6234 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-6234?

CVE-2023-6234 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-6234

CRITICAL

CVE-2023-6234

CWE-787Published: February 6, 2024· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Buffer overflow in CPCA Color LUT Resource Download process of 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 LBP670C Series/Satera MF750C Series firmware v03.07 and earlier sold in Japan. Color imageCLASS LBP674C/Color imageCLASS X LBP1333C/Color imageCLASS MF750C Series/Color imageCLASS X MF1333C Series firmware v03.07 and earlier sold in US. i-SENSYS LBP673Cdw/C1333P/i-SENSYS MF750C Series/C1333i Series firmware v03.07 and earlier sold in Europe.

NVD Source

Risk Analysis

This vulnerability is a buffer overflow in the Color LUT Resource Download process of specific Canon printers. It allows an unauthenticated attacker on the network to crash the device or execute arbitrary code, warranting a critical severity rating.

There is no known public exploit for this vulnerability, and it is not currently in CISA's KEV catalog. It is remotely exploitable due to the network-based attack vector.

Recommended Action

Update the firmware of the affected Canon printer models to a version beyond v03.07.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-6234 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.