Vulnerability Details CVE-2021-21831
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. 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 0.003
EPSS Ranking 55.4%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 6.8
References
Products affected by CVE-2021-21831
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cpe:2.3:a:foxit:pdf_reader:10.1.3.37598