An issue was discovered in Foxit Reader and PhantomPDF before 10.1. When there is a multiple interpretation error for /V (in the Additional Action and Field dictionaries), a use-after-free can occur with resultant remote code execution (or an information leak).
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26539
Reference (s):
- https://www.foxitsoftware.com/support/security-bulletins.html