Remote Code Execution Vulnerability in Foxit PDF Editor

CVE-2021-34959

What is CVE-2021-34959?

A vulnerability in Foxit PDF Editor involves a use-after-free condition in the handling of Annotation objects. This flaw allows attackers to execute arbitrary code on the system if a user interacts with a malicious PDF file or navigates to a harmful webpage. The root cause stems from the failure to validate the existence of an Annotation object before executing operations, potentially leading to full compromise of the affected system. Users are advised to exercise caution when opening PDF files from unknown sources to mitigate the risk associated with this vulnerability. For further information, refer to the advisory provided by ZDI.

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