EUVD-2026-42206
GHSA-hmr8-g2c8-fphv
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Buffer copy size validation
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv1 – Jul 08, 2026
Memory-corruption (buffer overflow) in Foxit PDF Reader and Foxit PDF Editor arises when the digital-signature plugin processes abnormally constructed signature objects: JavaScript triggers signature verification, but the plugin copies an anomalous string without validating its arguments, corrupting memory. A local victim who opens a crafted PDF is affected, and while the vendor describes the outcome as an application crash, the CVSS High confidentiality/integrity/availability impacts indicate potential for code execution. No public exploit identified at time of analysis.
Affected VersionsENISA
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from Vendor (Foxit) · only source for this CVE.
CVSS VectorVendor: Foxit
DescriptionCVE.org
When dealing with abnormally constructed objects, there is a lack of argument validation; JavaScript triggers signature verification, but the signature plugin does not perform validation when copying the abnormal string, causing the application to crash.
Executive ViewAI
Foxit PDF Reader and PDF Editor contain a high-severity memory corruption vulnerability in their digital-signature verification system that could allow code execution when a user opens a malicious PDF. Since PDFs are routinely shared across organizational boundaries as trusted business documents, this creates immediate enterprise-wide risk. The absence of a vendor patch means exposure cannot be eliminated through standard patching workflows.
Within 24 hours: Audit all Foxit PDF Reader and Editor installations across the organization and notify users to avoid opening PDFs from untrusted sources. Within 7 days: Restrict Foxit use to essential workflows only; migrate users to patched alternatives such as Adobe Acrobat Reader DC 24.x or browser-based PDF viewers where functionality permits. Within 30 days: Monitor Foxit security advisories for patch availability; evaluate permanent replacement of Foxit with alternative PDF tools; review logs for suspicious PDF-related incidents.
Implement application whitelisting with execution restrictions on Foxit processes; deploy endpoint detection and response (EDR) to monitor Foxit for abnormal behavior; disable JavaScript execution in PDF readers where possible; apply read-only file permissions to PDF libraries; use advanced content scanning on inbound PDF files; restrict Foxit PDF Editor to administrative use only; conduct security awareness training on document-based attack vectors.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
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Exploit-DB