CVE-2026-5943— Foxit PDF Editor/Reader AcroForm Annotation Use-After-Free Remote Code Execution Vulnerability
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I. Basic Information for CVE-2026-5943
Vulnerability Information
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Vulnerability Title
Foxit PDF Editor/Reader AcroForm Annotation Use-After-Free Remote Code Execution Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Document structural anomalies caused inconsistencies between page element relationships and internal index states. When scripts triggered document modifications, object reference validity was not properly maintained, leading to a crash when accessing an invalid pointer during page information queries.
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 Editor和Foxit PDF Reader存在资源管理错误漏洞，该漏洞源于文档结构异常导致页面元素关系与内部索引状态不一致，当脚本触发文档修改时对象引用有效性未正确维护，可能导致在页面信息查询时访问无效指针导致崩溃。
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-2026-5943
| # | 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-2026-5940 | 7.8 HIGH | Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability |
| 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-2026-5940
Foxit PDF Editor/Reader Annotation Use-After-Free Remote Cod - CVE-2026-5942
Foxit PDF Editor/Reader AcroForm Signature Use-After-Free Vu - 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-2026-5940
Foxit PDF Editor/Reader Annotation Use-After-Free Remote Cod - CVE-2026-5942
Foxit PDF Editor/Reader AcroForm Signature Use-After-Free Vu - CVE-2026-5939
UAF in Foxit PDF Editor/Reader via XFA calculate event
V. Comments for CVE-2026-5943
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