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OpenAdvisories
High · 8.8 CVE-2021-40420 EUVD-2021-27597GHSA-fp63-vpqm-jj5g

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 11.1.0.52543. A specially-crafted PD…

Published Feb 4, 2022 · Updated Apr 15, 2025 · Assigned by talos

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.

Affected products

VendorProductAffectedFixed
— Foxit Foxit Reader 11.1.0.52543 —

References