Foxit PDF Reader Square Annotation Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of Square annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14272.

Zero Day Initiative AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Zero Day Initiative CWE-416

Zero Day Initiative https://www.foxit.com/support/security-bulletins.html [No types assigned]

Zero Day Initiative https://www.zerodayinitiative.com/advisories/ZDI-21-1179/ [No types assigned]