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CVE-2026-91804

Foxit PDF Editor/Reader Out-of-bounds Write Vulnerability While Rendering

A heap-based out-of-bounds write vulnerability exists in Foxit PDF Editor/Reader’s rendering of Circle annotations with malformed Cloudy appearance streams in specially crafted PDF files. Insufficient validation of the appearance geometry can result in memory corruption and application crashes.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91802

Foxit PDF Editor/Reader — Heap Buffer Overflow in WebP Image Decoding via Bitmap Stride Confusion

A heap-based out-of-bounds write vulnerability exists in Foxit PDF Editor/Reader’s WebP image decoding due to improper handling of bitmap stride and target buffer formats. Successful exploitation could result in an application crash.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91801

Foxit PDF Editor/Reader RichMedia Annotation Directory Traversal Remote Code Execution Vulnerability

A path traversal vulnerability exists in Foxit PDF Editor/Reader's handling of embedded PDF resources. Insufficient validation of resource file paths may allow files to be written outside their intended locations, potentially enabling arbitrary code execution.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91808

Foxit PDF Editor/Reader JPEG File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor Reader’s handling of PDF image objects with inconsistent compression metadata. Insufficient validation during image decoding may result in an undersized buffer and an out-of-bounds read during rendering, causing an application crash.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91799

Foxit Editor/Reader Array resetForm Use-After-Free Vulnerability

A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of JavaScript array objects. A specially crafted PDF may cause the application to access a released object during array processing, potentially resulting in application crashes or arbitrary code execution.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91797

Foxit PDF Editor/Reader Portfolio Directory Traversal Remote Code Execution Vulnerability

Foxit PDF Editor/Reader failed to validate the directory traversal path in the attachment file name, resulting in malicious attachments being able to be written to directories outside the expected secure area when the PDF is opened.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91796

Foxit PDF Editor/Reader importIcon NTLM Response Information Disclosure Vulnerability

The interface of Foxit PDF Editor/Reader lacks the permission verification for secure reading mode, which allows specially crafted PDFs to trigger external SMB authentication without any security prompts and thereby leak the hash of the user's credentials.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91795

Foxit PDF Editor/Reader FileOpen Uninitialized Variable Remote Code Execution Vulnerability

Foxit PDF Editor/Reader's FileOpen plugin did not adequately validate certain encryption metadata in specially crafted PDF files. This could leave an internal pointer in an invalid state, resulting in chained read and write access violations and potentially enabling arbitrary code execution.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91793

Foxit PDF Editor/Reader Doc Object Use-After-Free Information Disclosure Vulnerability

When opening a specially crafted PDF, Foxit PDF Editor/Reader executes scripts that modify annotation rich-text attributes containing malformed font data. During subsequent annotation appearance reconstruction, it accesses an object after it has been released, resulting in a use-after-free condition and an application crash.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91792

Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability

When processing a specially crafted PDF, Foxit PDF Editor/Reader may perform reentrant zoom and layout operations through page- and annotation-related JavaScript actions. This can cause the application to access page objects after they have been released, resulting in a use-after-free condition and an application crash.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91791

Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability

When processing a specially crafted PDF file, Foxit PDF Editor/Reader may encounter a reentrant execution condition involving JavaScript triggered by page-visibility events. This can cause the application to access a released page-view object while calculating annotation boundaries, resulting in an invalid memory read and application crash.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91790

Foxit PDF Editor/Reader Doc Object Use-After-Free Information Disclosure Vulnerability

When rendering the page image, Foxit PDF Editor/Reader fails to perform validation on image objects whose optional content attributes are malformed. As a result, the program may access an already-freed internal data structure, triggering a crash due to UAF.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91789

Foxit PDF Editor/Reader U3D File Parsing Integer Overflow Remote Code Execution Vulnerability

Foxit PDF Editor/Reader’s U3D/GIF texture decoding path contained insufficient validation of image dimensions and related size information. Under certain conditions, this could lead to an incorrectly sized memory allocation and a subsequent out-of-bounds write during pixel processing, potentially resulting in remote code execution.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91806

Foxit PDF Editor/Reader Doc Object Use-After-Free Information Disclosure Vulnerability

A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of PDF form fields. Embedded JavaScript may access form-field references after the corresponding fields have been released, resulting in an application crash.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91805

Use-after-free Vulnerability in Foxit PDF Editor/Reader Page-tree Handling

A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s PDF page-tree handling. A specially crafted PDF can trigger page-structure changes during rendering, causing the application to access released page objects and resulting in memory corruption and an application crash.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91817

Foxit PDF Editor/Reader AcroForm Out-of-Bounds Read Remote Code Execution Vulnerability

A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of wide strings in embedded PDF JavaScript. Insufficient validation of string-deletion ranges can cause an integer underflow, resulting in an out-of-bounds read and application crash.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 1 more
CVE-2026-18622

Foxit PDF Editor/Reader's signature-validation pop-up reports modified certified documents as valid

Foxit PDF Editor/Reader inconsistently alerts users when signature fields are abnormally modified, including alterations to appearance, coordinates, or field duplication. This may mislead users into trusting tampered documents, since the UI cannot accurately reflect the actual integrity status of signatures.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Apple Foxit Foxitsoftware and 1 more
Products
Macos Pdf Editor Pdf Reader and 3 more
CVE-2026-18597

Blind SSRF on Foxit PDF Services API

The PDF creation feature of Foxit PDF Services API supports referencing external files. Although local file access is restricted, an attacker could trigger an SSRF vulnerability by using URL redirection to bypass validation, leading to information disclosure.

CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed
Vendors
Foxitsoftware
Products
Foxit Pdf Services Api
CVE-2026-57239

Foxit PDF Editor/Reader Local Privilege Escalation

The user-controllable executable files will be directly executed by high-privilege processes, allowing low-privilege users to have the opportunity to elevate their privileges to NT AUTHORITY\SYSTEM.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-57260

Security vulnerability in Foxit PDF Editor/Reader — U3D Adobe Mesh Decompression (Type Confusion / Invalid Pointer Dereference)

The application opened a PDF file containing an abnormal Unity 3D object. During parsing, the application incorrectly resolved a portion of the abnormal object as a pointer and used it as a valid address, ultimately causing the application to crash.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Apple Foxit Foxitsoftware and 1 more
Products
Macos Pdf Editor Pdf Reader and 3 more