CVE-2026-91817
A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of wide strings in embedded PDF JavaScript. Insufficient validation of string-deletion ranges can cause an integer 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)