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(ISC)2

CCSP · Question #208

Which Common Criteria Evaluation Assurance Level (EAL) is granted to those products that are formally verified in terms of design and tested by an independent third party?

The correct answer is D. 7. Common Criteria EAL 7 represents the most rigorous assurance level, requiring formal verification of the design and extensive independent testing.

Submitted by chen.hong· Apr 18, 2026Legal, Risk and Compliance

Question

Which Common Criteria Evaluation Assurance Level (EAL) is granted to those products that are formally verified in terms of design and tested by an independent third party?

Options

  • A1
  • B3
  • C5
  • D7

How the community answered

(28 responses)
  • A
    4% (1)
  • C
    7% (2)
  • D
    89% (25)

Why each option

Common Criteria EAL 7 represents the most rigorous assurance level, requiring formal verification of the design and extensive independent testing.

A1

EAL 1 (Functionally Tested) is the lowest assurance level, providing basic assurance.

B3

EAL 3 (Methodically Tested and Checked) involves a moderate level of assurance through testing and architectural design review.

C5

EAL 5 (Semiformally Designed and Tested) requires a higher level of assurance with a semiformally designed architectural design and rigorous testing.

D7Correct

EAL 7 (Formally Verified Design and Tested) is the highest assurance level under Common Criteria, indicating that the Target of Evaluation (TOE) has undergone a rigorous formal verification of its design and extensive independent testing.

Concept tested: Common Criteria Evaluation Assurance Levels (EALs)

Source: https://www.commoncriteriaportal.org/common-criteria/EALs.cfm

Topics

#Common Criteria#Evaluation Assurance Level (EAL)#Formal Verification#Product Certification

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