CVE-2021-21831 in Foxit Software and Foxit Products
Published on August 5, 2021
A use-after-free vulnerability exists in the JavaScript engine of Foxit Softwares 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.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2021-21831 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2021-21831
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Exploit Probability
EPSS
0.86%
Percentile
74.75%
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.