Use-after-free in Foxit PDF Reader for Windows and Foxit PDF Editor (formerly Foxit PhantomPDF) - CVE-2021-21822
Published: May 6, 2021 / Updated: May 7, 2021
Vulnerability identifier: #VU52935
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-21822
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when handling certain XFA forms or annotation objects. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Affected software
Foxit PDF Reader for Windows
Foxit PDF Editor (formerly Foxit PhantomPDF)
Foxit PDF Editor (formerly Foxit PhantomPDF)
How to mitigate CVE-2021-21822
Install updates from vendor's website.
Foxit PDF Reader for Windows - update to 10.1.4.37651
Foxit PDF Editor (formerly Foxit PhantomPDF) - update to 10.1.4.37651
Foxit PDF Editor (formerly Foxit PhantomPDF) - update to 10.1.4.37651