High severity · published Aug 5, 2021
CVE-2021-21870
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.4.37651
8.8
CVSS
1.9%
EPSS
No
On KEV
Description
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.4.37651. A specially crafted PDF document can trigger the reuse of previously free memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this vulnerability if the browser plugin extension is enabled.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
Pdf Reader · Foxit
10.1.4.37651 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21870
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21870
Exploit
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1307
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