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CVE-2023-6234

29
FAUCET Score

CVE-2023-6234 is a critical buffer overflow vulnerability affecting Canon Office Multifunction Printers and Laser Printers, specifically certain Satera, Color imageCLASS, and i-SENSYS series models with firmware v03.07 and earlier. This vulnerability, rated 9.8 CVSS (Critical), allows an unauthenticated attacker on the network segment to trigger device unresponsiveness or execute arbitrary code with low attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or KEV listing, though it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 03.07CPE matchmatch criteria
cpe:2.3:o:canon:mf755cdw_firmware:*:*:*:*:*:*:*:*
<= 03.07CPE matchmatch criteria
cpe:2.3:o:canon:mf753cdw_firmware:*:*:*:*:*:*:*:*
<= 03.07CPE matchmatch criteria
cpe:2.3:o:canon:mf751cdw_firmware:*:*:*:*:*:*:*:*
<= 03.07CPE matchmatch criteria
cpe:2.3:o:canon:lbp674c_firmware:*:*:*:*:*:*:*:*
<= 03.07CPE matchmatch criteria
cpe:2.3:o:canon:lbp672c_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.38%
Probability of exploitation in next 30 days
EPSS Percentile
69.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0138 is in the 56th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

canon.jp / support/support-info/240205vulnerability-response
Vendor Advisory
psirt.canon / advisory-information/cp2024-001
Vendor Advisory
canon-europe.com / support/product-security-latest-news
Vendor Advisory
usa.canon.com / support/canon-product-advisories/Service-Notice-Regarding-Vulnerability-Measure-Against-Buffer-Overflow-for-Laser-Printers-and-Small-Office-Multifunctional-Printers
Vendor Advisory