There is provided mechanisms for authenticating an OEM entity as manufacturer of a communication device comprising an identification module. A method is performed by a network entity. The method comprises providing, towards the identification module, a challenge of a challenge- response authentication procedure. The method comprises obtaining, from the identification module, a first response of the challenge-response authentication procedure. The method comprises providing, towards the OEM entity and upon having obtained the response, the challenge. The method comprises obtaining, from the OEM entity, a second response of the challenge-response authentication procedure. The method comprises authenticating the OEM entity as the manufacturer of the communication device only when the second response matches the first response.
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