The antivirus information is scanned from WMI. I would first do a manual rescan of the asset by using the "Rescan Asset" button on the asset's page. This will force a full rescan of all the items.
If after the rescan the information is still incorrect, then the computer's WMI will also be incorrect. If this is the case you can try rebuilding the WMI class as mentioned here: https://www.lansweeper.com/kb/123/managing-anti-virus-software-reports.html#heading1