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CVE-2026-3774— Self-Modifications Affecting Altered Printing and Redaction in Foxit PDF Editor

Quick assessment

Affected
Foxit Software Inc. Foxit PDF Editor
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Foxit PDF Reader和Foxit PDF Editor都是中国福昕（Foxit）公司的产品。Foxit PDF Reader是一款PDF阅读器。Foxit PDF Editor是一款PDF编辑器。 Foxit PDF Reader和Foxit PDF Editor存在安全漏洞，该漏洞源于PDF JavaScript和文档/打印操作可在涂改、加密或打印前后更新表单字段、注释或可选内容组，可能导致少量敏感内容未被移除或加密，或导致打印输出与屏幕审查内容略有不同。

CVSS 4.7 · Medium EPSS 0.18% · P7
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I. Basic Information for CVE-2026-3774

Vulnerability Information
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Vulnerability Title
Self-Modifications Affecting Altered Printing and Redaction in Foxit PDF Editor
Source: CVE Program / CVE List V5
Vulnerability Description
The application allows PDF JavaScript and document/print actions (such as WillPrint/DidPrint) to update form fields, annotations, or optional content groups (OCGs) immediately before or after redaction, encryption, or printing. These script‑driven updates are not fully covered by the existing redaction, encryption, and printing logic, which, under specific document structures and user workflows, may cause a small amount of sensitive content to remain unremoved or unencrypted as expected, or result in printed output that slightly differs from what was reviewed on screen.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Foxit PDF Reader和Foxit PDF Editor 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Foxit PDF Reader和Foxit PDF Editor都是中国福昕（Foxit）公司的产品。Foxit PDF Reader是一款PDF阅读器。Foxit PDF Editor是一款PDF编辑器。 Foxit PDF Reader和Foxit PDF Editor存在安全漏洞，该漏洞源于PDF JavaScript和文档/打印操作可在涂改、加密或打印前后更新表单字段、注释或可选内容组，可能导致少量敏感内容未被移除或加密，或导致打印输出与屏幕审查内容略有不同。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Foxit Software Inc. Foxit PDF Editor Versions 2025.3 and earlier -

II. Public POCs for CVE-2026-3774

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III. Intelligence Information for CVE-2026-3774

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Same Patch Batch · Foxit Software Inc. · 2026-04-01 · 8 CVEs total

CVE-2026-3775 7.8 HIGH Foxit PDF Editor/Reader Update Service Uncontrolled Search Path Element Local Privilege Es
CVE-2026-3779 7.8 HIGH Foxit PDF Editor/Reader List Box Calculate Array Use-After-Free Vulnerability
CVE-2026-3780 7.3 HIGH Foxit PDF Editor/Reader Installer Uncontrolled Search Path Privilege Escalation
CVE-2026-4947 7.1 HIGH Insecure Direct Object Reference (IDOR) Leading to Signature Forgery in Foxit eSign
CVE-2026-3778 6.2 MEDIUM Stack exhaustion caused by cyclic references in Foxit PDF Editor/Reader
CVE-2026-3776 5.5 MEDIUM Null pointer dereference in Foxit PDF Editor/Reader when accessing stamp annotation
CVE-2026-3777 5.5 MEDIUM Use after free of view cache in Foxit PDF Editor/Reader

IV. Related Vulnerabilities

Same product: Foxit PDF Editor
Same vendor: Foxit Software Inc.
Same weakness: CWE-200

V. Comments for CVE-2026-3774

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