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CVE-2023-0858

15
FAUCET Score

CVE-2023-0858 describes an improper authentication vulnerability in the RemoteUI of specific Canon Office/Small Office Multifunction Printers and Laser Printers, affecting various models sold in Japan, the US, and Europe with firmware version 11.04 and earlier. This medium-severity vulnerability (CVSS 5.3) allows an unauthenticated attacker on the same network segment to gain unauthorized access to the device, potentially compromising confidentiality. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 11.04CPE matchmatch criteria
cpe:2.3:o:canon:mf642cdw_firmware:*:*:*:*:*:*:*:*
<= 11.04CPE matchmatch criteria
cpe:2.3:o:canon:mf644cdw_firmware:*:*:*:*:*:*:*:*
<= 11.04CPE matchmatch criteria
cpe:2.3:o:canon:mf741cdw_firmware:*:*:*:*:*:*:*:*
<= 11.04CPE matchmatch criteria
cpe:2.3:o:canon:mf743cdw_firmware:*:*:*:*:*:*:*:*
<= 11.04CPE matchmatch criteria
cpe:2.3:o:canon:mf745cdw_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.1LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.57%
Probability of exploitation in next 30 days
EPSS Percentile
43.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0057 is in the 28th percentile among its peer group of 23,703 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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/230414vulnerability-response
psirt.canon / advisory-information/cp2023-001
canon-europe.com / support/product-security-latest-news
usa.canon.com / support/canon-product-advisories/Service-Notice-Vulnerabilities-Remediation-Against-Buffer-Overflow