CVE-2021-31422 Race condition in Desktop

What is CVE-2021-31422?

CVE-2021-31422 is a high-severity vulnerability in Parallels Parallels Desktop, published on 29 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.1-49141. 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 e1000e virtual device. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-12527.

Weakness: CWE-667, CWE-367

Which versions are affected by CVE-2021-31422?

It affects 1 product.

Products include Parallels Parallels Desktop.

How do I fix CVE-2021-31422?

No fix has been published for CVE-2021-31422 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-31422 being exploited?

There is no known exploitation of CVE-2021-31422 in the wild and no public exploit code.

Other vulnerabilities in Parallels Parallels Desktop

• CVE-2025-31359 Path traversal in Parallels Desktop for Mac High 8.8
• CVE-2021-34864 Privilege escalation in Desktop High 8.8
• CVE-2021-31420 Memory corruption in Desktop High 8.8
• CVE-2021-31424 Memory corruption in Desktop High 8.8
• CVE-2021-31425 Integer overflow in Desktop High 8.8

All Parallels Parallels Desktop vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-cjf9-9cpv-7xr2.