Is CVE-2020-8874 actively exploited?

No active exploitation of CVE-2020-8874 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-8874 be exploited remotely?

No. CVE-2020-8874 requires local access to exploit.

What is the CVSS score of CVE-2020-8874?

CVE-2020-8874 has a CVSS score of 6.7 (MEDIUM).

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MEDIUM

CVE-2020-8874

CWE-190Published: March 23, 2020· Updated: Jun 17, 2026

6.7

CVSS v3.1

Official Description

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.2-47123. 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 xHCI component. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor. Was ZDI-CAN-10032.

NVD Source

Technical Analysis

CVE-2020-8874 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.7.