Hi @sergi.vila and welcome to the forum 
That does seem strange. I looked into the Meraki switch and not sure why it’s flagged either. I did notice the version of Greenbone Security Assistant you’re running is older (and end of life). Our current version of the Greenbone Vulnerability Management suite is in the 21 series (info here at: GVM 21.04 (stable, initial release 2021-04-16)), can you please let us know if it’s still behaving like that with the current version? Thanks!