CVE-2021-40326: Foxit PDF Editor

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Foxit PDF Reader before 11.1 and PDF Editor before 11.1, and PhantomPDF before 10.1.6, mishandle hidden and incremental data in signed documents. An attacker can write to an arbitrary file, and display controlled contents, during signature verification.

Affected products

• Foxit PDF Editor: from 11.0, before 11.1 (fixed in 11.1)
• Foxit PDF Reader: from 11.0, before 11.1 (fixed in 11.1)
• Foxit Phantompdf: before 10.1.6 (fixed in 10.1.6)

Published 2022-08-29. Last modified 2026-06-17.