High severity7.8NVD Advisory· Published Sep 23, 2026· Updated Oct 8, 2026
CVE-2026-91791
CVE-2026-91791
Description
When processing a specially crafted PDF file, Foxit PDF Editor/Reader may encounter a reentrant execution condition involving JavaScript triggered by page-visibility events. This can cause the application to access a released page-view object while calculating annotation boundaries, resulting in an invalid memory read and application crash.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3Patches
Vulnerability mechanics
References
1- www.foxit.com/support/security-bulletins.htmlnvdVendor Advisory
News mentions
2- Foxit PDF Editor/Reader: 23 Vulnerabilities Disclosed in Single Batch, Affecting Multiple ComponentsVypr Intelligence · Sep 23, 2026
- ZDI-26-722: Foxit PDF Reader Annotation Use-After-Free Remote Code Execution VulnerabilityZero Day Initiative · Sep 23, 2026