CVE-2026-57242 Foxit Software Inc. CVE debrief

Who should care

Developers and administrators of applications using Foxit PDF components should prioritize assessment and remediation of this vulnerability. They should review and update application code to implement proper lifecycle management and null value validation for page objects. They should also conduct thorough testing of PDF handling and JavaScript interactions.

Technical summary

The application opens a PDF and allows JavaScript to modify forms. However, related page objects lack complete lifecycle management and null value validation. When the page state changes, the application continuously dereferences invalid objects, leading to a crash. This vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. The affected product or component is likely to be Foxit PDF components. The vulnerability class is related to PDF handling and JavaScript interactions.

Defensive priority

Immediate attention is required to prevent potential crashes and ensure application stability. Developers and administrators of applications using Foxit PDF components should prioritize assessment and remediation of this vulnerability.

Recommended defensive actions

• Review and update application code to implement proper lifecycle management and null value validation for page objects.
• Conduct thorough testing of PDF handling and JavaScript interactions.
• Apply vendor patches or workarounds as soon as available.
• Monitor application stability and crash reports.
• Consider compensating controls such as restricting JavaScript execution in PDFs.
• Review relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further investigation and verification are necessary to fully understand the affected scope and potential impact. The application opens a PDF and allows JavaScript to modify forms. However, related page objects lack complete lifecycle management and null value validation. When the page state changes, the application continuously dereferences invalid objects, leading to a crash. This vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. Developers and administrators of applications using Foxit PDF components should prioritize assessment and remediation of this vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.