High severity8.8NVD Advisory· Published Sep 23, 2026· Updated Oct 8, 2026
CVE-2026-91813
CVE-2026-91813
Description
A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows an update package to be replaced between download and high-privilege extraction due to insufficient file locking and integrity validation. This could enable local attackers to execute arbitrary code with elevated privileges.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*range: <=13.2.5.63482
- (no CPE)
cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*range: <=2026.2.0.39747
- (no CPE)
Patches
Vulnerability mechanics
References
1- www.foxit.com/support/security-bulletins.htmlnvdVendor Advisory
News mentions
1- ZDI-26-742: Foxit PDF Reader FoxitUpdater Race Condition Local Privilege Escalation VulnerabilityZero Day Initiative · Sep 23, 2026