CVE-2026-57246 Foxit Software Inc. CVE debrief

Who should care

Security teams should assess the impact of this HIGH severity vulnerability, with a CVSS score of 7.8, on their systems and applications. Operators, platform administrators, and vulnerability management teams should review the affected product or component and verify the affected scope and vendor guidance.

Technical summary

The vulnerability is caused by a lack of argument validation in JavaScript signature verification. When dealing with abnormally constructed objects, the signature plugin does not perform validation when copying the abnormal string, causing the application to crash. The CVSS vector is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Security teams should assess the impact of this HIGH severity vulnerability on their systems and applications.

Defensive priority

Apply patches or updates from the vendor to fix the vulnerability. Conduct a thorough review of system and application configurations to ensure they are not vulnerable to this issue.

Recommended defensive actions

• Verify and apply vendor patches or updates to fix the vulnerability.
• Conduct a thorough review of system and application configurations to ensure they are not vulnerable to this issue.
• Monitor system and application logs for potential exploitation attempts.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check 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.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record was published on 2026-07-08T09:16:32.620Z and has not been modified since then. The NVD entry is currently being reviewed. Security teams should verify the affected product deployments and assess the impact of this HIGH severity vulnerability. The CVE record provides limited information, and defenders should verify the affected scope and vendor guidance.

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.