CVE-2020-17399

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.4. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the prl_hypervisor kext. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-11303.

• CWE-129

• https://kb.parallels.com/en/125013Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-20-1017/Third Party Advisory, VDB Entry
• https://kb.parallels.com/en/125013Vendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-20-1017/Third Party Advisory, VDB Entry

Published

Aug 25, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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