What is the severity of ZDI-CAN-13543?

ZDI-CAN-13543 has a severity rating that indicates a significant risk of privilege escalation for local attackers.

How do I fix ZDI-CAN-13543?

To fix ZDI-CAN-13543, ensure that you update your Parallels Desktop software to the latest version provided by Parallels.

What types of systems are affected by ZDI-CAN-13543?

ZDI-CAN-13543 affects installations of Parallels Desktop for Mac.

What are the potential consequences of ZDI-CAN-13543?

Exploitation of ZDI-CAN-13543 can lead to unauthorized privilege escalation, allowing attackers to gain higher access rights on the affected system.

Vulnerability/
ZDI-CAN-13543

high

8.8

27/2/2025

ZDI-CAN-13543: (Pwn2Own) Parallels Desktop WinAppHelper Improper Access Control 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 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.

Affected Software	Affected Version	How to fix
Parallels Desktop for Mac

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Reference Links

https://www.zerodayinitiative.com/advisories/ZDI-21-1000/

Frequently Asked Questions

What is the severity of ZDI-CAN-13543?
ZDI-CAN-13543 has a severity rating that indicates a significant risk of privilege escalation for local attackers.
How do I fix ZDI-CAN-13543?
To fix ZDI-CAN-13543, ensure that you update your Parallels Desktop software to the latest version provided by Parallels.
What types of systems are affected by ZDI-CAN-13543?
ZDI-CAN-13543 affects installations of Parallels Desktop for Mac.
Who can exploit ZDI-CAN-13543?
Local attackers who have the ability to execute low-privileged code on the target guest system can exploit ZDI-CAN-13543.
What are the potential consequences of ZDI-CAN-13543?
Exploitation of ZDI-CAN-13543 can lead to unauthorized privilege escalation, allowing attackers to gain higher access rights on the affected system.

agent/softwarecombine
agent/references
agent/severity
agent/title
agent/type
agent/description
agent/event
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-21-1000
alias/ZDI-CAN-13543
alias/CVE-2021-34864
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/parallels
canonical/parallels desktop for mac

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