Vulnerability Details CVE-2021-40420
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 63.7%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 6.8
References
Products affected by CVE-2021-40420
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cpe:2.3:a:foxit:pdf_reader:11.1.0.52543