Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XSummary
CVE-2025-14231 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Canon Mf455Dw Firmware. Its CVSS base score is 9.3 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 46% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-15 (Development Process, Standards, and Tools) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-14231 is a buffer overflow vulnerability (CWE-787) in the Web Services on Devices (WSD) print job processing component affecting various Canon Small Office Multifunction Printers and Laser Printers running firmware version v06.02 and earlier. Impacted models include the Satera LBP670C Series, Satera MF750C Series (Japan); Color imageCLASS LBP630C, Color imageCLASS MF650C Series, imageCLASS LBP230 Series, imageCLASS X LBP1238 II, imageCLASS MF450 Series, imageCLASS X MF1238 II, imageCLASS X MF1643i II, and imageCLASS X MF1643iF II (US); and i-SENSYS LBP630C Series, i-SENSYS MF650C Series, i-SENSYS LBP230 Series, 1238P II, 1238Pr II, i-SENSYS MF450 Series, i-SENSYS MF550 Series, 1238i II, 1238iF II, imageRUNNER 1643i II, and imageRUNNER 1643iF II (Europe). The vulnerability carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) and was published on 2026-01-16.
An unauthenticated attacker on the same network segment can exploit this vulnerability remotely by sending malicious print jobs via WSD, potentially causing the affected printer to become unresponsive (denial of service) or enabling execution of arbitrary code with the privileges of the print processing service.
Canon advisories detail remediation measures, including firmware updates where available. Relevant guidance is provided in support notices at https://canon.jp/support/support-info/260115vulnerability-response, https://psirt.canon/advisory-information/cp2026-001/, https://www.canon-europe.com/support/product-security/, and https://www.usa.canon.com/support/canon-product-advisories/Service-Notice-Regarding-Remediation-Measure-Against-Potential-Buffer-Overflow-Vulnerability-in-Laser-Printers-and-Small-Office-Multifunctional-Printers. Security practitioners should verify affected devices, apply patches promptly, and segment printer networks to limit exposure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-3015
Vulnerability Data
Buffer overflow in print job processing by WSD on 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 LBP670C…
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Series/Satera MF750C Series firmware v06.02 and earlier sold in Japan.Color imageCLASS LBP630C/Color imageCLASS MF650C Series/imageCLASS LBP230 Series/imageCLASS X LBP1238 II/imageCLASS MF450 Series/imageCLASS X MF1238 II/imageCLASS X MF1643i II/imageCLASS X MF1643iF II firmware v06.02 and earlier sold in US.i-SENSYS LBP630C Series/i-SENSYS MF650C Series/i-SENSYS LBP230 Series/1238P II/1238Pr II/i-SENSYS MF450 Series/i-SENSYS MF550 Series/1238i II/1238iF II/imageRUNNER 1643i II/imageRUNNER 1643iF II firmware v06.02 and earlier sold in Europe.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation (including fuzzing and bounds checks) finds out-of-bounds write flaws before deployment.
Requiring documented secure-development standards and tools can mandate bounds-checked coding practices that avoid the weakness.
Input validation can structurally reject or sanitize data that would otherwise trigger an out-of-bounds write.
Memory-protection mechanisms limit the exploitability and blast radius of a successful out-of-bounds write.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure-development practices (static analysis, bounds checking, code review) are the primary means of preventing out-of-bounds writes.
Vulnerability scanning and recording can discover out-of-bounds write flaws so they can be remediated.
Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing in development and acceptance can detect and prevent out-of-bounds write defects.
Secure development life cycle mandates practices that prevent out-of-bounds writes.
Application security requirements can specify bounds-checking and safe memory handling.
Secure architecture and engineering principles reduce the likelihood of buffer overflows.
Secure coding directly addresses out-of-bounds writes through language choice and coding standards.
Change management can enforce review gates that catch unsafe memory operations before deployment.