CVE-2017-12969

CVE-2017-12969 is a buffer overflow vulnerability affecting the ViewerCtrlLib.ViewerCtrl ActiveX control in Avaya IP Office Contact Center versions prior to 10.1.1. This flaw allows remote attackers to trigger a denial of service or execute arbitrary code by supplying a long string to the open method. With a CVSS score of 8.8 (High), this vulnerability is easily exploitable over a network with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, exploit code is publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.