The CRA does not define the term expressly in the regulation itself, but the draft Commission guidance explains it as the product's main features and technical capabilities, without which it would not be able to meet its intended purpose.
It determines whether the product is in the default category, is an important product of class I or class II, or is a critical product, and therefore which conformity assessment regime applies.
How should a manufacturer determine a product's core functionality?
The draft Commission guidance says the manufacturer should assess the product's main features and technical capabilities in light of its intended purpose, specific context and conditions of use.
The guidance also says that this assessment can be supported by the instructions for use, promotional or sales materials, manufacturer statements and the technical documentation. That aligns with the CRA definitions of intended purpose and reasonably foreseeable use.
Is core functionality about the whole product or about one component inside it?
It is about the product as a whole.
The CRA and the Commission FAQ make clear that the integration of a product or component with important or critical functionality does not by itself determine the classification of the finished product. The key question is the core functionality of the finished product itself.
Can a product perform many functions but still have only one core functionality for CRA classification?
Yes.
The draft Commission guidance says a product may not have more than one core functionality for the purpose of determining the applicable conformity assessment regime, even if it has many additional or ancillary features.
Do additional or ancillary functions automatically change the CRA core-functionality classification?
No.
The Commission FAQ and the draft guidance both explain that the presence of additional functions does not by itself mean that the product loses the core functionality of a listed category or moves into another category.
If a product can perform the functions of an important or critical category, does that automatically mean it has that core functionality?
No.
The draft Commission guidance says a product may be capable of performing functions associated with an important or critical category and still have a different core functionality. The assessment should focus on what the product mainly is, not on whether one feature overlaps with a listed category.
If a product integrates an operating system, browser, firewall or secure element, does that decide the product's own core functionality?
No.
The Commission FAQ gives concrete examples: integrating an embedded browser into a news app does not make the app a browser for CRA classification, and integrating a secure element into a laptop does not make the laptop a secure element product. The same logic applies more broadly to other integrated listed components.
Can a product fall outside a listed category because it goes beyond that category's core functionality?
Yes.
The Commission FAQ and the draft guidance use SOAR software as an example. Even though a SOAR tool may perform SIEM-like functions, it is generally not treated as having the core functionality of a SIEM if its own core functionality is different.
Can a product fall outside a listed category because it falls short of that category's core functionality?
Yes.
The draft Commission guidance gives the example of security-related tools that collect and visualise logs but do not perform the full analytical and actionable functions associated with SIEM systems. Partial overlap is not enough by itself.
Are partial similarities in domain, purpose or deployment context enough to classify a product as important or critical?
No.
The draft Commission guidance says the assessment should focus on the product's actual features and technical capabilities, as reflected in its intended purpose, rather than on vague product groupings, shared market context or partially overlapping functions.
Must the manufacturer document the chosen core functionality?
Yes.
The draft Commission guidance says the product's core functionality should be clearly identified so that the applicable conformity assessment regime can be determined and checked. That fits with the CRA's broader documentation framework, including the need to describe the product's intended purpose and the conformity assessment procedure followed.
Can a manufacturer describe the product strategically to avoid being classified as important or critical?
No.
The draft Commission guidance says a manufacturer may not misrepresent its product's core functionality in order to avoid the applicable conformity assessment regime. Clear inconsistencies between promotional materials, instructions for use and technical documentation can indicate that kind of misrepresentation.
Does core functionality determine only the conformity route, or also the scope of compliance?
It determines the route, but the whole product still has to comply.
The draft Commission guidance explains that core functionality is the classification tool. It does not limit the product's broader compliance obligations. The conformity assessment and the manufacturer's risk assessment still have to address the product as a whole.
If a harmonised standard covers the product's core functionality, does that automatically give full presumption of conformity for the whole product?
No.
The draft Commission guidance explains that a harmonised standard may support the use of internal control for an important class I product where it covers the core functionality, but the presumption of conformity extends only to the parts whose risks are actually covered by that standard. Additional functions and additional risks may still need to be addressed through other means.
What should manufacturers use as the main reference for deciding whether a product matches a listed CRA category by core functionality?
The Commission FAQ says the technical descriptions of the important and critical product categories are laid down in Commission Implementing Regulation (EU) 2025/2392, and the draft Commission guidance also relies on those descriptions.
So in practice, manufacturers should not classify products only by label or market intuition. They should compare the product's real features and technical capabilities against the category descriptions referred to in the CRA materials.
What if a product's core functionality does not match any Annex III or Annex IV category?
Then it falls into the default category.
The CRA does not use the term "default category" in the legal text itself, but the draft Commission guidance uses it for products whose core functionality does not match a category in Annex III or Annex IV. Those products follow the general conformity-assessment regime in Article 32(1), rather than the special routes for important or critical products.
Are product names, marketing labels, or sales positioning enough to determine core functionality?
No.
The relevant question is whether the product's actual features and technical capabilities match the technical description of a listed category. Marketing and sales materials do matter as evidence of intended purpose and context of use, but they do not replace the underlying feature and capability analysis. If those materials conflict with the instructions for use or the technical documentation, the draft guidance treats that as a warning sign that the manufacturer may be misrepresenting the product's core functionality.
Does use in a critical or sensitive environment by itself make a product important or critical?
No.
Classification turns on core functionality, not on deployment environment alone. A product's operating context can still matter greatly for the cybersecurity risk assessment and for the measures the manufacturer must implement, but it does not by itself change a product into an important or critical category if the product's own core functionality does not match one of the listed categories.
If two products have the same core functionality, can they still require different cybersecurity measures?
Yes.
The Commission FAQ gives this directly with two different VPN products. Both may have the same core functionality and therefore the same CRA category, but the manufacturer still has to perform a product-specific cybersecurity risk assessment. A VPN intended for critical infrastructure may require more demanding measures than a VPN intended only for residential use, even though both remain VPN products for classification purposes.