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CVE-2026-91814

Security vulnerability: Foxit PDF Editor/Reader Fails to Detect Modifications to Signed Documents Displaying Newly Added Content

A signature validation vulnerability exists in Foxit PDF Editor/Reader’s handling of incrementally updated PDF documents. Changes to visible document content may not invalidate the existing signature, allowing attackers to alter signed content and potentially carry out content spoofing while the document continues to appear validly signed.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Apple Foxit Foxitsoftware and 1 more
Products
Macos Pdf Editor Pdf Reader and 3 more
CVE-2026-91794

Foxit PDF Editor/Reader DeviceN Colorspace Out-Of-Bounds Write Remote Code Execution Vulnerability

An out-of-bounds write vulnerability exists in the PDF rendering process of Foxit PDF Editor/Reader due to insufficient consistency and boundary validation when processing malformed color space data, which may cause the program to crash and potentially lead to remote code execution.

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
CVE-2026-91788

Foxit PDF Editor/Reader Missing Authorization Information Disclosure Vulnerability

When implementing the JavaScript interface, Foxit PDF Editor/Reader did not perform the attribute authorization checks required by the specification. As a result, a trusted malicious PDF could potentially access sensitive content from other documents within the same process and transmit it externally.

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-2026-91800

Foxit PDF Editor installer local privilege escalation

A local privilege escalation vulnerability exists in the installer of Foxit PDF Editor for macOS due to insufficient validation of a user-modifiable configuration value during high-privilege upgrades. A local attacker could exploit this issue to execute arbitrary commands with root privileges.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Apple Foxit Foxitsoftware
Products
Macos Pdf Editor Pdf Reader and 1 more
CVE-2026-91807

Foxit PDF Editor/Reader PDF 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 malformed image soft-mask data. Insufficient validation of the soft-mask data attribute during image parsing may cause an arithmetic underflow, resulting in an out-of-bounds read and application crash.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Apple Foxit Foxitsoftware and 1 more
Products
Macos Pdf Editor Pdf Reader and 3 more
CVE-2026-91811

Foxit PDF Editor/Reader PRC Stream Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

A heap-based out-of-bounds write vulnerability exists in Foxit PDF Editor/Reader’s PRC parser due to insufficient validation of vertex indices in triangular fan texture meshes. Successful exploitation could result in memory corruption and an application 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
CVE-2026-91803

Security Vulnerability Report – Foxit PDF Editor/Reader Updater DLL Search Path Hijacking

A local privilege escalation vulnerability exists in the updater of Foxit PDF Editor/Reader due to unsafe loading of dynamic-link libraries from a user-writable directory during high-privilege operations. A local attacker could exploit this issue to execute code with elevated privileges.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91809

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

A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of malformed PDF form fields. Improper validation during field-name traversal may cause the application to access a released object, 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-2026-91812

Foxit PDF Editor/Reader FoxitUpdater Improper Certificate Validation Local Privilege Escalation Vulnerability

A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows man-in-the-middle attackers to bypass certificate validation and package integrity checks, potentially enabling arbitrary code execution with system privileges.

CVSS 3.1 · 7.9 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91813

Foxit PDF Editor/Reader FoxitUpdater Race Condition Local Privilege Escalation Vulnerability

A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows an update package to be replaced between download and high-privilege extraction due to insufficient file locking and integrity validation. This could enable local attackers to execute arbitrary code with elevated privileges.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Foxit Foxitsoftware Microsoft
Products
Pdf Editor Pdf Reader Foxit Pdf Editor and 2 more
CVE-2026-91815

Foxit PDF Editor/Reader JPEG2000 Parsing Memory Corruption Remote Code Execution Vulnerability

Foxit PDF Editor/Reader does not perform sufficient verification of the JPEG2000 image metadata in the PDF file, which leads to out-of-bounds write in the heap buffer during decoding, potentially causing the program to crash and introducing the risk of 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-2026-91816

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

A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of PDF annotations. Reentrant annotation deletion triggered by embedded JavaScript can cause the application to access an annotation object after it has been released, resulting in a use-after-free condition 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-2026-91818

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

A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s JavaScript handling of PDF annotations. Reentrant page-event processing during annotation enumeration may release the associated page object, which is subsequently accessed, 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-2026-91804

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