Is CVE-2023-27328 actively exploited?

No active exploitation of CVE-2023-27328 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-27328 be exploited remotely?

No. CVE-2023-27328 requires local access to exploit.

What is the CVSS score of CVE-2023-27328?

CVE-2023-27328 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2023-27328

CWE-91Published: May 3, 2024· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

Parallels Desktop Toolgate XML Injection Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. 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 a user-supplied string before using it to construct an XML document. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-19187.

NVD Source

Technical Analysis

CVE-2023-27328 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low 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 7.8.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.