What is the severity of ZDI-21-438?

The severity of ZDI-21-438 is considered critical as it allows local attackers to disclose sensitive information.

How can I fix ZDI-21-438?

To fix ZDI-21-438, ensure you are using the latest version of Parallels Desktop, which includes necessary security updates.

Who is affected by ZDI-21-438?

ZDI-21-438 affects installations of Parallels Desktop for Mac that have not been patched.

What is the impact of ZDI-21-438?

The impact of ZDI-21-438 is the potential disclosure of sensitive information by a local attacker with high-privileged code execution.

What versions of Parallels Desktop are vulnerable to ZDI-21-438?

All unpatched versions of Parallels Desktop for Mac are vulnerable to ZDI-21-438.

Vulnerability/
ZDI-21-438

medium

27/2/2025

ZDI-21-438: Parallels Desktop IDE Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows local attackers to disclose sensitive information 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 IDE 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 in conjunction with other vulnerabilities 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

Frequently Asked Questions

What is the severity of ZDI-21-438?
The severity of ZDI-21-438 is considered critical as it allows local attackers to disclose sensitive information.
How can I fix ZDI-21-438?
To fix ZDI-21-438, ensure you are using the latest version of Parallels Desktop, which includes necessary security updates.
Who is affected by ZDI-21-438?
ZDI-21-438 affects installations of Parallels Desktop for Mac that have not been patched.
What is the impact of ZDI-21-438?
The impact of ZDI-21-438 is the potential disclosure of sensitive information by a local attacker with high-privileged code execution.
What versions of Parallels Desktop are vulnerable to ZDI-21-438?
All unpatched versions of Parallels Desktop for Mac are vulnerable to ZDI-21-438.

agent/references
agent/type
agent/severity
agent/title
agent/softwarecombine
agent/event
agent/description
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-21-438
alias/ZDI-CAN-13188
alias/CVE-2021-31430
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/parallels
canonical/parallels desktop for mac

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Frequently Asked Questions

What is the severity of ZDI-21-438?
The severity of ZDI-21-438 is considered critical as it allows local attackers to disclose sensitive information.
How can I fix ZDI-21-438?
To fix ZDI-21-438, ensure you are using the latest version of Parallels Desktop, which includes necessary security updates.
Who is affected by ZDI-21-438?
ZDI-21-438 affects installations of Parallels Desktop for Mac that have not been patched.
What is the impact of ZDI-21-438?
The impact of ZDI-21-438 is the potential disclosure of sensitive information by a local attacker with high-privileged code execution.
What versions of Parallels Desktop are vulnerable to ZDI-21-438?
All unpatched versions of Parallels Desktop for Mac are vulnerable to ZDI-21-438.