Parallels: Security Vulnerabilities
A privilege escalation vulnerability exists in the Snapshot functionality of Parallels Desktop for Mac version 20.1.1 (build 55740). When a snapshot of a virtual machine is taken, a root service writes to a file owned by a normal user. By using a hard link, an attacker can write to an arbitrary file, potentially leading to privilege escalation.
CVSS Score
7.8
EPSS Score
0.0
Published
2025-06-03
A directory traversal vulnerability exists in the PVMP package unpacking functionality of Parallels Desktop for Mac version 20.2.2 (55879). This vulnerability can be exploited by an attacker to write to arbitrary files, potentially leading to privilege escalation.
CVSS Score
8.8
EPSS Score
0.001
Published
2025-06-03
A privilege escalation vulnerability exists in the Snapshot functionality of Parallels Desktop for Mac version 20.1.1 (build 55740). When a snapshot of a virtual machine is deleted, a root service verifies and modifies the ownership of the snapshot files. By using a symlink, an attacker can change the ownership of files owned by root to a lower-privilege user, potentially leading to privilege escalation.
CVSS Score
7.8
EPSS Score
0.0
Published
2025-06-03
A privilege escalation vulnerability exists in the virtual machine archive restoration functionality of Parallels Desktop for Mac version 20.1.1 (55740). When an archived virtual machine is restored, the prl_vmarchiver tool decompresses the file and writes the content back to its original location using root privileges. An attacker can exploit this process by using a hard link to write to an arbitrary file, potentially resulting in privilege escalation.
CVSS Score
7.8
EPSS Score
0.0
Published
2025-06-03
Improper privilege management vulnerability in Parallels Desktop Software, which affects versions earlier than 19.3.0. An attacker could add malicious code in a script and populate the BASH_ENV environment variable with the path to the malicious script, executing on application startup. An attacker could exploit this vulnerability to escalate privileges on the system.
CVSS Score
7.7
EPSS Score
0.001
Published
2024-06-21
Parallels Desktop Toolgate Heap-based Buffer Overflow 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 high-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 the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the current user on the host system. Was ZDI-CAN-20450.
CVSS Score
8.2
EPSS Score
0.0
Published
2024-06-20
Parallels Desktop Updater Protection Mechanism Failure Software Downgrade Vulnerability. This vulnerability allows local attackers to downgrade Parallels software on affected installations of Parallels Desktop. An attacker must first obtain the ability to execute low-privileged code on the target host system in order to exploit this vulnerability.
The specific flaw exists within the Updater service. The issue results from the lack of proper validation of version information before performing an update. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-19481.
CVSS Score
7.8
EPSS Score
0.0
Published
2024-06-20
The Remote Application Server in Parallels RAS before 19.2.23975 does not segment virtualized applications from the server, which allows a remote attacker to achieve remote code execution via standard kiosk breakout techniques.
CVSS Score
10.0
EPSS Score
0.035
Published
2023-12-14
The Web Client of Parallels Remote Application Server v18.0 is vulnerable to Host Header Injection attacks. This vulnerability allows attackers to execute arbitrary commands via a crafted payload injected into the Host header.
CVSS Score
8.1
EPSS Score
0.001
Published
2022-11-23
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 17.1.1 (51537). 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 ACPI virtual device. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-16554.
CVSS Score
8.2
EPSS Score
0.0
Published
2022-07-18
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