CVE-2026-3780— Foxit PDF Editor/Reader Installer Uncontrolled Search Path Privilege Escalation
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I. Basic Information for CVE-2026-3780
Vulnerability Information
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Vulnerability Title
Foxit PDF Editor/Reader Installer Uncontrolled Search Path Privilege Escalation
Source: NVD (National Vulnerability Database)
Vulnerability Description
The application's installer runs with elevated privileges but resolves system executables and DLLs using untrusted search paths that can include user-writable directories, allowing a local attacker to place malicious binaries with the same names and have them loaded or executed instead of the legitimate system files, resulting in local privilege escalation.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可信的搜索路径
Source: NVD (National Vulnerability Database)
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，该漏洞源于安装程序以提升的权限运行，但使用包含用户可写目录的不受信任搜索路径解析系统可执行文件和DLL，可能导致本地攻击者放置同名恶意二进制文件并使其被加载或执行，从而造成本地权限提升。
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 Reader | Versions 2025.3 and earlier | - | |
| Foxit Software Inc. | Foxit PDF Editor | Versions 2025.3 and earlier | - |
II. Public POCs for CVE-2026-3780
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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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-2026-4947 | 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 |
| CVE-2026-3774 | 4.7 MEDIUM | Self-Modifications Affecting Altered Printing and Redaction in Foxit PDF Editor |
IV. Related Vulnerabilities
Same product: Foxit PDF Reader
- CVE-2025-66499
Foxit PDF Reader PDF Parsing Heap-Based Buffer Overflow Remo - CVE-2025-66498
Foxit PDF Reader 3D Annotation Out-of-Bounds Memory Access V - CVE-2025-66497
Foxit PDF Reader 3D Annotation Out-of-Bounds Memory Access V - CVE-2025-66496
Foxit PDF Reader 3D Annotation Out-of-Bounds Memory Access V - CVE-2025-66495
Foxit PDF Reader Annotation Use-After-Free Remote Code Execu
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-2026-5943
Foxit PDF Editor/Reader AcroForm Annotation Use-After-Free R
Same weakness: CWE-426
- CVE-2026-7309
Openshift-controller-manager: openshift container platform: - CVE-2026-35368
uutils coreutils chroot Local Privilege Escalation and chroo - CVE-2026-35603
Claude Code: Insecure System-Wide Configuration Loading Enab - CVE-2026-40947
Yubico多款产品 安全漏洞 - CVE-2026-27290
Adobe Framemaker | Untrusted Search Path (CWE-426)
V. Comments for CVE-2026-3780
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