CVE-2026-3777
Use-After-Free in View Cache Pointers Enables Code Execution
Publication date: 2026-04-01
Last updated on: 2026-04-14
Assigner: Foxit
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| foxit | pdf_editor | From 2023.1.0.15510 (inc) to 2023.3.0.23028 (inc) |
| foxit | pdf_editor | From 2024.1.0.23997 (inc) to 2024.4.1.27687 (inc) |
| foxit | pdf_editor | to 13.2.2.24014 (inc) |
| foxit | pdf_editor | From 14.0.0.33046 (inc) to 14.0.2.33402 (inc) |
| foxit | pdf_editor | From 2025.1.0.27937 (inc) to 2025.3.0.35737 (inc) |
| foxit | pdf_reader | to 2025.3.0.35737 (inc) |
| foxit | pdf_editor | From 2023.1.0.55583 (inc) to 2023.3.0.63083 (inc) |
| foxit | pdf_editor | From 2024.1.0.63682 (inc) to 2024.4.1.66479 (inc) |
| foxit | pdf_editor | to 13.2.2.63349 (inc) |
| foxit | pdf_editor | From 14.0.0.68868 (inc) to 14.0.2.69164 (inc) |
| foxit | pdf_editor | From 2025.1.0.66692 (inc) to 2025.3.0.69570 (inc) |
| foxit | pdf_reader | to 2025.3.0.69570 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability occurs because 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 to it are still kept and later dereferenced.
Under certain crafted JavaScript and document structures, this can lead to a use-after-free condition, which potentially allows an attacker to execute arbitrary code.
How can this vulnerability impact me? :
This vulnerability can impact you by allowing an attacker to execute arbitrary code on your system.
Because it involves a use-after-free condition triggered by manipulated JavaScript and document states, it could lead to system compromise or unauthorized actions.
The CVSS score indicates a moderate severity with a base score of 5.5 and an impact primarily on availability.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, users are advised to update their Foxit PDF Reader and Editor applications to the latest versions.
- Use the application’s built-in update feature to obtain the latest version.
- Alternatively, download the latest versions directly from the Foxit website.