Security Advisory

CVE-2021-40420

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2022-02-04 22:29:08

Last updated 2025-04-15 19:10:45

Assigner talos

State PUBLISHED

Description

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 11.1.0.52543. 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 to open 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.

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