CVE-2023-33876: Foxit PDF Reader

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

A use-after-free vulnerability exists in the way Foxit Reader 12.1.2.15332 handles destroying annotations. Specially crafted Javascript code inside a malicious PDF document can trigger reuse of a previously freed object, which can lead to memory corruption and result in arbitrary code execution. An attacker needs to trick the user into opening the malicious file to trigger this vulnerability. Exploitation is also possible if a user visits a specially crafted, malicious site if the browser plugin extension is enabled.

Affected products

• Foxit PDF Reader: version 12.1.2.15332 only

Published 2023-07-19. Last modified 2026-06-17.