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CVE-2021-34856

HIGH CVSS: 8.8 Published: 2021-10-25 Modified: 2026-06-17

Description

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.3 (49160). An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the virtio-gpu virtual device. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13581.

Affected Platforms

Parallels Parallels Desktop

Weakness Type

CWE-119, CWE-787

References