CVE-2020-8871

Severity: medium (CVSS 6.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-03-23 · updated 2026-06-17
Weakness: CWE-787

Description

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.0-47107 . 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 VGA virtual device. 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 hypervisor. Was ZDI-CAN-9403.

Affected products

Parallels Desktop: before 15.1.3 — fixed in 15.1.3

How to fix

Upgrade to a fixed version: Parallels Desktop 15.1.3. Check the vendor advisory for mitigations.

References

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