CVE-2025-54661 is a vulnerability identifier that was reserved but subsequently rejected by the assigning authority, Fortinet, as indicated by the 'state' marked as 'REJECTED'. There are no technical details, affected versions, or descriptions provided, and no known exploits in the wild have been reported. The absence of a CVSS score and patch information further suggests that this entry does not correspond to a confirmed or active security vulnerability. The lack of CWE classification and technical indicators also supports the conclusion that this is not an actionable or exploitable threat at this time.

Given that CVE-2025-54661 has been rejected and lacks any technical details or evidence of exploitation, it poses no known impact to European organizations or any other entities. Without confirmed vulnerability information, there is no basis to assess potential confidentiality, integrity, or availability risks. Therefore, European organizations are not at risk from this CVE entry.

Since CVE-2025-54661 is a rejected and unconfirmed vulnerability, no specific mitigation actions are necessary. Organizations should continue to follow standard security best practices, including maintaining up-to-date software and monitoring trusted vulnerability advisories for confirmed threats. It is advisable to disregard this CVE entry until further validated information is available.