: C:\Program Files\Tenable\Nessus\nessuscli.exe fetch --challenge
Tenable releases plugin updates weekly (sometimes daily for critical CVEs). If you search for an old link or use a cached file from three months ago, you will miss detections for vulnerabilities like Log4Shell, MOVEit Transfer, or new CVEs in 2025. Always ensure you download the signature. download nessusupdateplugins all20targz new