CVE-2021-34854

HighCVSS 7.8/10Last modified Jun 17, 2026

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 low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the Toolgate component. The issue results from the lack of proper validation of user-supplied data, which can result in an uncontrolled memory allocation. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13544.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-789CWE-770

Affected software

No affected versions have been published.

Timeline

Published
Oct 25, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-34854: High severity, CVSS 7.8 | Vulnix