What is CVE-2023-33866?

CVE-2023-33866 is a use-after-free vulnerability in the JavaScript engine of Foxit Software’s PDF Reader version 12.1.2.15332.

What is the severity of CVE-2023-33866?

The severity of CVE-2023-33866 is high.

How does CVE-2023-33866 work?

CVE-2023-33866 exploits a use-after-free vulnerability in Foxit PDF Reader, allowing a specially crafted PDF document to trigger the reuse of freed memory and potentially execute arbitrary code.

How can I fix CVE-2023-33866?

To fix CVE-2023-33866, update Foxit Software’s PDF Reader to a version that is not affected by this vulnerability.

Where can I find more information about CVE-2023-33866?

You can find more information about CVE-2023-33866 at the following link: [https://talosintelligence.com/vulnerability_reports/TALOS-2023-1757](https://talosintelligence.com/vulnerability_reports/TALOS-2023-1757)

Vulnerability/
CVE-2023-33866

high

8.8

CWE

416

19/7/2023

28/10/2024

CVE-2023-33866: Use After Free

First published: Wed Jul 19 2023(Updated: )

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 12.1.2.15332. By prematurely deleting objects associated with pages, a specially crafted PDF document can trigger the reuse of previously freed memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening the malicious file to trigger this vulnerability. Exploitation is also possible if a user visits a specially crafted, malicious site if the browser plugin extension is enabled.

Credit: talos-cna@cisco.com talos-cna@cisco.com

Affected Software	Affected Version	How to fix
Foxit PDF Reader	=12.1.2.15332

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Reference Links

https://talosintelligence.com/vulnerability_reports/TALOS-2023-1757

Frequently Asked Questions

What is CVE-2023-33866?
CVE-2023-33866 is a use-after-free vulnerability in the JavaScript engine of Foxit Software’s PDF Reader version 12.1.2.15332.
What is the severity of CVE-2023-33866?
The severity of CVE-2023-33866 is high.
How does CVE-2023-33866 work?
CVE-2023-33866 exploits a use-after-free vulnerability in Foxit PDF Reader, allowing a specially crafted PDF document to trigger the reuse of freed memory and potentially execute arbitrary code.
How can I fix CVE-2023-33866?
To fix CVE-2023-33866, update Foxit Software’s PDF Reader to a version that is not affected by this vulnerability.
Where can I find more information about CVE-2023-33866?
You can find more information about CVE-2023-33866 at the following link: [https://talosintelligence.com/vulnerability_reports/TALOS-2023-1757](https://talosintelligence.com/vulnerability_reports/TALOS-2023-1757)

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agent/severity
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vendor/foxit
canonical/foxit pdf reader
version/foxit pdf reader/12.1.2.15332

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