What is CVE-2021-34868?

CVE-2021-34868 is a high-severity vulnerability in Parallels Desktop, classified under CWE-789. CVSS score: 8.8/10. Published 2022-01-25.

How severe is CVE-2021-34868?

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

Vulnerability in Parallels Desktop

CVE-2021-34868

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 Toolgate component. The issue results from the lack of proper validation of user-supplied data, which can result in an uncontrolled memory allocation. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13712.

EPSS: 0.004 (34.7th 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 — versions 16.1.3-49160

Weakness classification (CWE)

CWE-789

References

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

Frequently asked questions

What is CVE-2021-34868?: CVE-2021-34868 is a high-severity vulnerability in Parallels Desktop, classified under CWE-789. CVSS score: 8.8/10. Published 2022-01-25.
How severe is CVE-2021-34868?: High severity. CVSS v3 base score is 8.8 out of 10.