What is CVE-2021-34864?

CVE-2021-34864 is a high-severity vulnerability in Parallels Desktop, classified under Improper Access Control. CVSS score: 8.8/10. Published 2021-10-25.

How severe is CVE-2021-34864?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Parallels Desktop

CVE-2021-34864

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 WinAppHelper component. The issue results from the lack of proper access control. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13543.

EPSS: 0.002 (13.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Parallels Desktop — versions 16.1.3 (49160)
Parallels Parallels_desktop — versions 16.1.3

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-34864?: CVE-2021-34864 is a high-severity vulnerability in Parallels Desktop, classified under Improper Access Control. CVSS score: 8.8/10. Published 2021-10-25.
How severe is CVE-2021-34864?: High severity. CVSS v3 base score is 8.8 out of 10.