HP LaserJet Pro MFP M428fdw

Security Grade

Calculator v1

   Brand: HP (Parent: HP)

   Category: Printer • Model / Gen: LaserJet Pro M400 M428fdw

   Release Date: 2018-08-09 • Status: In sale

   Classification Date: 2025-09-24 • Official Website

Security Evaluation

Criterion	Value	Proof	Comment
Known hardware tampering	Rare	—	Physical attacks are uncommon, but implanting malicious firmware via the USB port is a known attack vector.
Known vulnerabilities	Very common	[Link to the CVE Database and search for "HP LaserJet" 🔗 Proof]	Key Points: The firmware of HP LaserJet printers is complex, and there have been a large number of Remote Code Execution (RCE) and Denial of Service (DoS) vulnerabilities in its history. HP releases security advisories on a regular basis.
Prior attacks	Rare	[Link to news about printer botnets or data theft 🔗 Proof]	Printers have been used to build botnets (e.g., The Moon), steal printed documents, or serve as springboards for lateral movement within internal networks.
Updatability	Very common	[HP Firmware Update Tool, HP Smart. 🔗 Proof]	Key Point: HP provides a systematic firmware update process, but for enterprise users, timely deployment of these updates is a major challenge.
Category Score	Score: 2 / 3

Criterion	Value	Proof	Comment
Authentication with other systems	Partial	[HP Jetdirect Protocol. 🔗 Proof]	It supports multiple network protocols and authentication methods, but the default configuration may be insecure.
Communications	Encrypted with obselete encryption	—	Key Risks: Many printer services (such as port 9100 raw printing) are unencrypted by default. Even if encryption is used, outdated protocols (e.g., SSLv3) may be employed.
Storage	Encrypted with obselete encryption	—	Key Risks: Print jobs are cached on the hard drive. Enterprise-grade models may support encryption, but consumer-grade models usually do not, leading to leaks of sensitive documents.
Category Score	Score: 2 / 3

Criterion	Value	Proof	Comment
Account management	Full	[Device Management Interface 🔗 Proof]	It supports advanced management functions such as PIN code printing, department codes, and AD integration, but manual configuration is required. 补充说明：
Authentication	Basic	[The default administrator password is usually blank or simple 🔗 Proof]	One of the biggest risk points: the administrator console often uses default or weak passwords, which are extremely vulnerable to being
Brute-force protection	Absent	—	Many models' web management interfaces do not have brute-force attack prevention mechanisms.
Event logging	Access event logged	[System Logs. 🔗 Proof]	They can record access and error events, but require administrators to check them proactively.
Passwords	Default/Common/Easy to guess	—	Key Risk: After factory settings and initial configuration, forcing the change of the default administrator password is the biggest security challenge.
Category Score	Score: 2 / 3

Property	Details
Operating System & App	HP Proprietary OS (Companion App: HP Smart)
Hardware (CPU / GPU)	CPU: HP dedicated processor • GPU:
Memory & Storage	Memory: 110-127V AC • Storage: 2 GB internal storage
Power, Battery & Charging	Battery: • Power: 110-127V AC • Charging:
Display & Camera	Display: 5-inch color touch screen • Camera:
Sound & Connectivity	Sound: • Connectivity: Gigabit Ethernet, Wi-Fi 802.11a/b/g/n/ac, USB 2.0
Physical (Dimensions & Mass)	Dimensions: 15.9 x 16.3 x 15.7 inches • Mass: 80 pounds