PatchSiren cyber security CVE debrief

CVE-2026-57240 Foxit Software Inc. CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-08T09:16:31.927Z and has not been modified since then. This vulnerability affects applications that open and process PDF files, particularly those using JavaScript for dynamic content. The vulnerability class involves invalid pointer references caused by JavaScript deleting PDF fields while the application still uses old field pointers. The likely operational impact includes application crashes. Source confidence is limited due to the lack of specific details about the affected product or vendor.

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: 2026-07-09
Advisory published: 2026-07-08
Advisory updated: 2026-07-09

Who should care

Users of applications that open and process PDF files, especially those relying on JavaScript for dynamic content, should be aware of this vulnerability. This includes operators, platform administrators, vulnerability management teams, and security teams who need to assess the risk and implement necessary mitigations.

Technical summary

When a PDF file is opened and JavaScript deletes the PDF fields, the application fails to update the field pointers. Subsequent logic attempts to use these outdated pointers, leading to invalid references and causing the application to crash. This issue is triggered by a specific sequence of actions within the application's PDF handling functionality. The vulnerability has a HIGH CVSS score of 7.8, indicating a significant impact on application stability.

Defensive priority

Given the HIGH CVSS score of 7.8, defenders should prioritize patching or mitigating this vulnerability to prevent potential crashes and ensure application stability. This involves confirming whether affected product deployments exist in managed environments, planning vendor-supported updates or mitigations, and reviewing compensating controls for exposed systems.

Recommended defensive actions

Apply patches or updates from the vendor once available
Implement compensating controls to monitor and restrict PDF file interactions
Conduct regular inventory checks for affected applications
Monitor for and respond to potential application crashes
Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record and NVD entry provide limited information about the specific application or vendor affected. Further investigation is needed to determine the full scope of potentially impacted products and to verify vendor remediation efforts. Defenders should verify the existence of affected product deployments in managed environments and review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Sources and references

Verified primary and authoritative sources

CVE-2026-57240 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-57240

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-57240 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-57240

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Source reference
Unverified legacy reference

URL: https://www.foxit.com/support/security-bulletins.html

14984358-7092-470d-8f34-ade47a7658a2

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.