, specifically including updates through February 2018, represents a critical stability baseline for this version of the suite. Summary of Service Pack 1 (KB2817430)
By February 2018, Office 2013 was in its phase. Updates during this period focused almost exclusively on security vulnerabilities and critical bug fixes. Office 2013 Professional Plus SP1 Feb 2018 Down...
Updates from early 2018 addressed vulnerabilities that could allow remote code execution if a user opened a malicious file. specifically including updates through February 2018