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CVE-2026-3777

HIGHCVSS 7.8/10EPSS 0.12%

Last modified

CVE-2026-3777 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.12% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability
0.12%

2.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FoxitPdf Editor<= 13.2.2.24014
FoxitPdf Editor>= 14.0.0.33046, <= 14.0.2.33402
FoxitPdf Editor>= 2023.1.0.15510, <= 2023.3.0.23028
FoxitPdf Editor>= 2024.1.0.23997, <= 2024.4.1.27687
FoxitPdf Editor>= 2025.1.0.27937, <= 2025.3.0.35737
FoxitPdf Reader<= 2025.3.0.35737
FoxitPdf Editor<= 13.2.2.63349
FoxitPdf Editor>= 14.0.0.68868, <= 14.0.2.69164
FoxitPdf Editor>= 2023.1.0.55583, <= 2023.3.0.63083
FoxitPdf Editor>= 2024.1.0.63682, <= 2024.4.1.66479
FoxitPdf Editor>= 2025.1.0.66692, <= 2025.3.0.69570
FoxitPdf Reader<= 2025.3.0.69570

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-3777?
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.
How severe is CVE-2026-3777?
CVE-2026-3777 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.12% probability of exploitation in the next 30 days.
How do I fix CVE-2026-3777?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-3777?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST