CVE-2026-5940— Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability
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I. Basic Information for CVE-2026-5940
Vulnerability Information
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Vulnerability Title
Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Calling a function that triggers a UI refresh after removing comments via a script may access an invalidated object, leading to program crashes.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
Foxit PDF Reader和Foxit PDF Editor 资源管理错误漏洞
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存在资源管理错误漏洞，该漏洞源于通过脚本移除注释后调用触发UI刷新的函数可能访问无效对象，导致程序崩溃。
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 2026.1 and earlier | - | |
| Foxit Software Inc. | Foxit PDF Reader | Versions 2026.1 and earlier | - |
II. Public POCs for CVE-2026-5940
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Same Patch Batch · Foxit Software Inc. · 2026-04-27 · 7 CVEs total
| CVE-2026-5941 | 7.8 HIGH | Foxit PDF Editor/Reader AcroForm Signature Remote Code Execution Vulnerability |
| CVE-2026-5943 | 7.8 HIGH | Foxit PDF Editor/Reader AcroForm Annotation Use-After-Free Remote Code Execution Vulnerabi |
| CVE-2026-5939 | 5.5 MEDIUM | UAF in Foxit PDF Editor/Reader via XFA calculate event |
| CVE-2026-5938 | 5.5 MEDIUM | Foxit PDF Editor/Reader Infinite Loop Denial-of-Service Vulnerability |
| CVE-2026-5937 | 5.5 MEDIUM | Foxit PDF Editor/Reader's insufficient parameter validation leads to denial-of-service vul |
| CVE-2026-5942 | 5.5 MEDIUM | Foxit PDF Editor/Reader AcroForm Signature Use-After-Free Vulnerability |
IV. Related Vulnerabilities
Same product: Foxit PDF Editor
- CVE-2026-5937
Foxit PDF Editor/Reader's insufficient parameter validation - CVE-2026-5938
Foxit PDF Editor/Reader Infinite Loop Denial-of-Service Vuln - CVE-2026-5942
Foxit PDF Editor/Reader AcroForm Signature Use-After-Free Vu - CVE-2026-5943
Foxit PDF Editor/Reader AcroForm Annotation Use-After-Free R - CVE-2026-5939
UAF in Foxit PDF Editor/Reader via XFA calculate event
Same vendor: Foxit Software Inc.
- CVE-2026-5937
Foxit PDF Editor/Reader's insufficient parameter validation - CVE-2026-5938
Foxit PDF Editor/Reader Infinite Loop Denial-of-Service Vuln - CVE-2026-5942
Foxit PDF Editor/Reader AcroForm Signature Use-After-Free Vu - CVE-2026-5943
Foxit PDF Editor/Reader AcroForm Annotation Use-After-Free R - CVE-2026-5939
UAF in Foxit PDF Editor/Reader via XFA calculate event
V. Comments for CVE-2026-5940
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