Security readout for executives and security teams
Plain-English summary
Some Canon office printers can be crashed or potentially taken over by anyone who can reach them on the same network segment. The issue is critical because it needs no login or user interaction, but exposure depends on having the listed models with firmware v03.07 or earlier.
Executive priority
Treat as a high-priority infrastructure hygiene issue for affected sites. Patch or isolate vulnerable printers promptly, especially where printer networks are reachable from general user or guest devices. Business urgency is critical, but only for the specific listed Canon models and firmware versions.
Technical view
CVE-2023-6231 is a CWE-787 buffer overflow in the WSD probe request process of specific Canon laser and multifunction printers. CVSS 3.1 is 9.8, network attack vector, low complexity, no privileges, no user interaction, with high confidentiality, integrity, and availability impact.
Likely exposure
Highest risk is in flat office, guest, or shared networks where users can directly reach affected Canon printers. Listed affected models span Japan Satera, US Color imageCLASS, and Europe i-SENSYS/C1333 lines running firmware v03.07 or earlier.
Exploitation context
The source states an attacker on the network segment may make the product unresponsive or execute arbitrary code. The bundle marks KEV as false and provides no cited evidence of active exploitation, public exploit use, or weaponized tooling.
Researcher notes
The source bundle identifies product families, regions, firmware threshold, CWE, and CVSS, but does not include patch version details or exploitation evidence. Validation should focus on model and firmware confirmation, WSD/network reachability, and Canon advisory tracking rather than assumptions about broader Canon exposure.
Mitigation direction
- Inventory affected Canon models and firmware versions across all offices.
- Follow Canon's regional advisory for model-specific remediation or firmware guidance.
- Prioritize devices running firmware v03.07 or earlier.
- Restrict printer access from guest, public, and untrusted network segments.
- Limit discovery and management exposure to trusted administrative networks.
Validation and detection
- Confirm whether each printer model appears in Canon's affected product list.
- Record firmware version and flag v03.07 or earlier.
- Verify printers are not reachable from untrusted segments.
- Check Canon regional advisories for current remediation status.
- Document applied firmware or compensating network controls.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-6231 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://psirt.canon/advisory-information/cp2024-001/CVE reference · vendor-advisory
- https://canon.jp/support/support-info/240205vulnerability-responseCVE reference · vendor-advisory
- https://www.usa.canon.com/support/canon-product-advisories/Service-Notice-Regarding-Vulnerability-Measure-Against-Buffer-Overflow-for-Laser-Printers-and-Small-Office-Multifunctional-PrintersCVE reference · vendor-advisory
- https://www.canon-europe.com/support/product-security-latest-news/CVE reference · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.