If using Tenable Nessus, it appears they are merely checking the OpenSSh version present and flagging. However, per Juniper only certain versions of Junos OS Evolved is affected, we will be sure once you share the particular CVE's being flagged. Please check:
https://supportportal.juniper.net/s/article/2025-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Multiple-vulnerabilities-resolved-in-OpenSSH
This article may also provide information to map Junos version to OpenSSH version present on your device:
https://supportportal.juniper.net/s/article/2024-05-Reference-Advisory-Junos-OS-and-Junos-OS-Evolved-Multiple-CVEs-reported-in-OpenSSH
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