CVE-2026-91807

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.

  • Published Sep 23, 2026
  • CVSS 6.1 medium
  • 0.1% chance of exploitation in the next 30 days (EPSS)

Affected software

In the news

CVE-2026-91807 at the National Vulnerability Database