CVE-2026-91804
HIGH
NVD
CVSS Score
7.8
Severity
HIGH
Published
Sep 23, 2026
Vendor
unknown
Description
A heap-based out-of-bounds write vulnerability exists in Foxit PDF Editor/Reader’s rendering of Circle annotations with malformed Cloudy appearance streams in specially crafted PDF files. Insufficient validation of the appearance geometry can result in memory corruption and application crashes.