CVE-2020-17397

CVE-2020-17397 is a high-severity privilege escalation vulnerability affecting Parallels Desktop 15.1.4. It allows a local attacker, who has already achieved high-privileged code execution on a guest system, to escalate privileges to the hypervisor level. This is due to improper validation of user-supplied data in network packet handling, leading to memory corruption. While the CVSS score is 8.2, there is no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.