Brother iPrint&Scan V6.11.2 and earlier contains an improper access control vulnerability. This vulnerability may be exploited by the other app installed on the victim user's Android device, which may lead to displaying the settings and/or log information of the affected app as a print preview.
https://support.brother.com/g/b/link.aspx?prod=group2&faqid=faq00100794_000
https://play.google.com/store/apps/details?id=com.brother.mfc.brprint