MinorCritical vulnerability

CVE-2026-91804 (CVSS 7.8)

NVD · officialPublished Sep 23, 2026Risk 23/100EPSS 0.1%

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.

Technical details

CVSS

7.8

AV:LocalAC:LowPR:NoneUI:RequiredC:HighI:HighA:High

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

Open primary source