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PatchSiren cyber security CVE debrief

CVE-2026-57251 Foxit Software Inc. CVE debrief

A HIGH severity vulnerability, CVE-2026-57251, was found in an application that opens PDFs. The issue arises from the lack of proper upper limit setting and consistency checks during the construction process, which has a cloud-like appearance. This oversight exposes out-of-bounds access to the underlying array, ultimately causing the application to crash. The vulnerability has a HIGH CVSS score of 7.8, indicating significant risk. Organizations should review their use of the affected application and prepare for potential mitigation or patching efforts.

Vendor
Foxit Software Inc.
Product
Foxit PDF Editor
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-08
Original CVE updated
2026-07-08
Advisory published
2026-07-08
Advisory updated
2026-07-08

Who should care

Organizations and individuals using the affected application for PDF processing should be aware of this vulnerability. Given its HIGH CVSS score of 7.8, prioritizing patching or mitigation efforts is recommended to prevent potential crashes or further exploitation. IT teams and security professionals responsible for managing and securing PDF processing applications should take immediate action to assess their exposure and implement necessary safeguards.

Technical summary

The vulnerability, CVE-2026-57251, is caused by inadequate checks in the PDF processing functionality of the application. Specifically, the construction process lacks an upper limit setting and consistency checks, leading to potential out-of-bounds access. This could allow for a controlled crash of the application. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating a HIGH severity level. The vulnerability affects the application's ability to handle PDF files, which could lead to application crashes or potential exploitation.

Defensive priority

Highest Priority: Immediate Patching Recommended

Recommended defensive actions

  • Apply patches or updates provided by the vendor to fix the vulnerability.
  • Implement compensating controls such as monitoring for abnormal application behavior.
  • Conduct regular inventory checks to ensure all instances of the application are up-to-date.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
  • 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.

Evidence notes

The CVE record was published on 2026-07-08T09:16:33.180Z and has not been modified since then. The NVD entry is currently in the 'Received' status. Limited information is available about the specific affected products or versions. Further verification is needed to determine the full scope of affected systems and potential impact.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-08T09:16:33.180Z and has not been modified since then. The NVD entry is currently in the 'Received' status.