Vulnerability identifier: #VU55326

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21893

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Foxit PDF Reader for Windows
Client/Desktop applications / Office applications
Foxit PDF Editor (formerly Foxit PhantomPDF)
Client/Desktop applications / Office applications

Vendor: Foxit Software Inc.

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the "event.target" property. A remote attacker can execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Foxit PDF Reader for Windows: 10.0.0.35798 - 11.0.0.49893

Foxit PDF Editor (formerly Foxit PhantomPDF): 11.0.0.0510 - 11.0.1.0719, 10.0.0.35798 - 10.1.4.37651

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External links
http://www.foxitsoftware.com/support/security-bulletins.html?Security+updates+available+in+Foxit+PDF+Editor+Mac+11.0.1+and+Foxit+PDF+Reader+Mac+11.0.1+2021-07-27+00%3A00%3A00

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.