With a little change you can let your Windows XP pretend to be Windows Embedded POSReady 2009 and get security updates until April 9, 2019.
The Filter Manager component and Administration Support Tools are required in order for Kaspersky Embedded Systems Security to install and work properly on a computer running embedded operating systems. Excluded from that, embedded versions of Windows XP have other support life cycles and Windows Embedded POSReady 2009 reaches end of extended support last, on April 9, 2019. 2018-02 Security Update for Windows XP Embedded SP3 for x86-based Systems (KB4074836) Windows XP Embedded.