Vulnerability Details CVE-2021-34856
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 39.6%
CVSS Severity
CVSS v3 Score 8.2
CVSS v2 Score 4.6
References
Products affected by CVE-2021-34856
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cpe:2.3:a:parallels:parallels_desktop:16.1.3