The CVE identifier CVE-2024-40391 was reserved on July 5, 2024, but subsequently rejected by the assigning authority (MITRE). The rejection status indicates that after review, the entry was determined not to represent a valid security vulnerability. No technical details, affected products, or exploitation data have been published. The absence of a CVSS score and lack of patch or exploit information further confirm that this CVE does not describe an actual threat. This status typically occurs when a reported issue is invalid, duplicates another CVE, or does not meet the criteria for a security vulnerability.

Since CVE-2024-40391 is a rejected and invalid entry, it poses no risk or impact to organizations worldwide. There are no affected systems or software versions, no known exploits, and no confidentiality, integrity, or availability concerns associated with this CVE. Organizations can safely disregard this identifier without concern for security implications.

No mitigation or remediation actions are necessary for CVE-2024-40391 as it does not represent a real vulnerability. Organizations should continue to follow standard security best practices and monitor official advisories for valid vulnerabilities affecting their systems. It is recommended to verify CVE statuses through trusted sources to avoid unnecessary response efforts.