The Foxit JPEG2000/JBIG2 Decoder add-on before 2.0.2009.616 for Foxit Reader 3.0 before Build 1817 does not properly handle a fatal error during decoding of a JPEG2000 (aka JPX) header, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via a crafted PDF file that triggers an invalid memory access.

Foxit Reader 2.3 before Build 3902 and 3.0 before Build 1506, including 3.0.2009.1301, does not properly handle a JBIG2 symbol dictionary segment with zero new symbols, which allows remote attackers to execute arbitrary code via a crafted PDF file that triggers a dereference of an uninitialized memory location.

Heap-based buffer overflow in Foxit Remote Access Server (aka WAC Server) 2.0 Build 3503 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via long SSH packets, a different vulnerability than CVE-2008-0151.

Heap-based buffer overflow in Foxit Remote Access Server (aka WAC Server) 2.0 Build 3503 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via long SSH packets, a different vulnerability than CVE-2008-0151.

Stack-based buffer overflow in Foxit Reader before 2.3 build 2912 allows user-assisted remote attackers to execute arbitrary code via a crafted PDF file, related to the util.printf JavaScript function and floating point specifiers in format strings.

Heap-based buffer overflow in Foxit WAC Server 2.1.0.910, 2.0 Build 3503, and earlier allows remote attackers to cause a denial of service (crash) and execute arbitrary code via a Telnet request with long options.

Stored XSS via Attachments Feature in https://pdfonline.foxit.com/

Foxit PDF Editor Cloud (pdfonline) contains a stored cross-site scripting vulnerability in the file upload feature. A malicious username is embedded into the upload file list without proper escaping, allowing arbitrary JavaScript execution when the list is displayed. This issue affects pdfonline.foxit.com: before 2026‑02‑03.

Stored XSS via Create New Layer Field found in Foxit PDF Editor Cloud

Foxit PDF Editor Cloud (pdfonline) contains a stored cross-site scripting vulnerability in the Create New Layer feature. Unsanitized user input is embedded into the HTML output, allowing arbitrary JavaScript execution when the layer is referenced. This issue affects pdfonline.foxit.com: before 2026‑02‑03.

Use after free of view cache in Foxit PDF Editor/Reader

The application does not properly validate the lifetime and validity of internal view cache pointers after JavaScript changes the document zoom and page state. When a script modifies the zoom property and then triggers a page change, the original view object may be destroyed while stale pointers are still kept and later dereferenced, which under crafted JavaScript and document structures can lead to a use-after-free condition and potentially allow arbitrary code execution.

Stack exhaustion caused by cyclic references in Foxit PDF Editor/Reader

The application does not detect or guard against cyclic PDF object references while handling JavaScript in PDF. When pages and annotations are crafted that reference each other in a loop, passing the document to APIs (e.g., SOAP) that perform deep traversal can cause uncontrolled recursion, stack exhaustion, and application crashes.

Null pointer dereference in Foxit PDF Editor/Reader when accessing stamp annotation

The application does not validate the presence of required appearance (AP) data before accessing stamp annotation resources. When a PDF contains a stamp annotation missing its AP entry, the code continues to dereference the associated object without a prior null or validity check, which allows a crafted document to trigger a null pointer dereference and crash the application, resulting in denial of service.

Foxit PDF Editor/Reader Update Service Uncontrolled Search Path Element Local Privilege Escalation Vulnerability

The application's update service, when checking for updates, loads certain system libraries from a search path that includes directories writable by low‑privileged users and is not strictly restricted to trusted system locations. Because these libraries may be resolved and loaded from user‑writable locations, a local attacker can place a malicious library there and have it loaded with SYSTEM privileges, resulting in local privilege escalation and arbitrary code execution.

In Foxit PDF Reader before 2024.3, and PDF Editor before 2024.3 and 13.x before 13.1.4, an attacker can replace an update file with a Trojan horse via side loading, because the update service lacks integrity validation for the updater. Attacker-controlled code may thus be executed.

Foxit PDF Reader < 4.2.0.0928 Title Stack Buffer Overflow

Foxit PDF Reader before 4.2.0.0928 does not properly bound-check the /Title entry in the PDF Info dictionary. A specially crafted PDF with an overlong Title string can overflow a fixed-size stack buffer, corrupt the Structured Exception Handler (SEH) chain, and lead to arbitrary code execution in the context of the user who opens the file.

Foxit PDF Reader < 4.3.1.0218 JavaScript File Write

Foxit PDF Reader <  4.3.1.0218 exposes a JavaScript API function, createDataObject(), that allows untrusted PDF content to write arbitrary files anywhere on disk. By embedding a malicious PDF that calls this API, an attacker can drop executables or scripts into privileged folders, leading to code execution the next time the system boots or the user logs in.

Server-Side Request Forgery (SSRF) via URL Parameter in Foxit PDF Services API

An attacker can control a server-side HTTP request by supplying a crafted URL, causing the server to initiate requests to arbitrary destinations. This behavior may be exploited to probe internal network services, access otherwise unreachable endpoints (e.g., cloud metadata services), or bypass network access controls, potentially leading to sensitive information disclosure and further compromise of the internal environment.

Self-Modifications Affecting Altered Printing and Redaction in Foxit PDF Editor

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.

Reflected Cross-Site Scripting (XSS) Vulnerability in na1.foxitesign.foxit.com via Unsanitized URL Parameters

URL parameters are directly embedded into JavaScript code or HTML attributes without proper encoding or sanitization. This allows attackers to inject arbitrary scripts when an authenticated user visits a crafted link. This issue affects na1.foxitesign.foxit.com: before 2026‑01‑16.

Foxit PDF Reader PDF Parsing Heap-Based Buffer Overflow Remote Code Execution Vulnerability

A heap-based buffer overflow vulnerability exists in the PDF parsing of Foxit PDF Reader when processing specially crafted JBIG2 data. An integer overflow in the calculation of the image buffer size may occur, potentially allowing a remote attacker to execute arbitrary code.

Foxit PDF Reader 3D Annotation Out-of-Bounds Memory Access Vulnerability

A memory corruption vulnerability exists in the 3D annotation handling of Foxit PDF Reader due to insufficient bounds checking when parsing PRC data. When opening a PDF file containing malformed or specially crafted PRC content, out-of-bounds memory access may occur, resulting in memory corruption.