CVE-2019-17390

CVE-2019-17390 describes a local privilege escalation vulnerability in the Pronestor Planner Outlook add-in, specifically affecting versions prior to 8.1.77. This flaw stems from mishandled access control in the PronestorHealthMonitor.exe service. Rated with a CVSS score of 7.8 (High), successful exploitation allows an attacker with local user privileges to achieve higher system access, leading to potential compromise of confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.