What is the severity of CVE-2021-21870?

CVE-2021-21870 has a critical severity rating due to the potential for arbitrary code execution.

How do I fix CVE-2021-21870?

To fix CVE-2021-21870, update Foxit PDF Reader to the latest version provided by the vendor.

What versions of Foxit Reader are affected by CVE-2021-21870?

CVE-2021-21870 specifically affects Foxit Reader version 10.1.4.37651.

What type of vulnerability is CVE-2021-21870?

CVE-2021-21870 is a use-after-free vulnerability in the JavaScript engine of Foxit PDF Reader.

What can attackers achieve with CVE-2021-21870?

Attackers can execute arbitrary code on a victim's system by exploiting CVE-2021-21870 through a malicious PDF document.

Vulnerability/
CVE-2021-21870

high

8.8

CWE

416

5/8/2021

3/8/2024

CVE-2021-21870: Use After Free

First published: Thu Aug 05 2021(Updated: )

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.

Credit: talos-cna@cisco.com

Affected Software	Affected Version	How to fix
Foxit Reader	=10.1.4.37651

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Reference Links

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1307

Frequently Asked Questions

What is the severity of CVE-2021-21870?
CVE-2021-21870 has a critical severity rating due to the potential for arbitrary code execution.
How do I fix CVE-2021-21870?
To fix CVE-2021-21870, update Foxit PDF Reader to the latest version provided by the vendor.
What versions of Foxit Reader are affected by CVE-2021-21870?
CVE-2021-21870 specifically affects Foxit Reader version 10.1.4.37651.
What type of vulnerability is CVE-2021-21870?
CVE-2021-21870 is a use-after-free vulnerability in the JavaScript engine of Foxit PDF Reader.
What can attackers achieve with CVE-2021-21870?
Attackers can execute arbitrary code on a victim's system by exploiting CVE-2021-21870 through a malicious PDF document.

agent/softwarecombine
agent/type
collector/mitre-cve
source/MITRE
agent/author
agent/references
agent/last-modified-date
agent/severity
agent/weakness
agent/description
agent/first-publish-date
agent/event
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/foxit
canonical/foxit reader
version/foxit reader/10.1.4.37651

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Frequently Asked Questions

What is the severity of CVE-2021-21870?
CVE-2021-21870 has a critical severity rating due to the potential for arbitrary code execution.
How do I fix CVE-2021-21870?
To fix CVE-2021-21870, update Foxit PDF Reader to the latest version provided by the vendor.
What versions of Foxit Reader are affected by CVE-2021-21870?
CVE-2021-21870 specifically affects Foxit Reader version 10.1.4.37651.
What type of vulnerability is CVE-2021-21870?
CVE-2021-21870 is a use-after-free vulnerability in the JavaScript engine of Foxit PDF Reader.
What can attackers achieve with CVE-2021-21870?
Attackers can execute arbitrary code on a victim's system by exploiting CVE-2021-21870 through a malicious PDF document.