CVE-2026-91807 [MEDIUM] – A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling

A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of malformed image soft-mask data. Insufficient validation of the soft-mask data attribute during image parsing may cause an arithmetic underflow, resulting in an out-of-bounds read and application crash.