Security readout for executives and security teams
Plain-English summary
CVE-2018-9954 is a Foxit Reader flaw that can let an attacker run code if a user opens a malicious file or visits a malicious page. The affected version named in the source bundle is Foxit Reader 9.0.1.1049. No active exploitation evidence is provided.
Executive priority
Treat this as a high-priority legacy desktop software risk, especially for users handling external documents. Prioritize inventory and remediation, but do not classify it as known exploited based on the supplied evidence.
Technical view
The flaw is in Foxit Reader handling of XFA Button elements. Setting the y attribute can trigger operations on a missing object, described as CWE-416 use-after-free behavior, enabling code execution in the current process. User interaction is required.
Likely exposure
Exposure is likely limited to environments with Foxit Reader 9.0.1.1049 or unverified older deployments. Risk is higher where users routinely open external PDFs or browse untrusted sites with Foxit-associated content.
Exploitation context
The provided sources describe remote code execution requiring the target to open a malicious file or visit a malicious page. CISA KEV status is false in the bundle, and no cited source here confirms active exploitation.
Researcher notes
Evidence is clear on affected product, vulnerable version, user interaction, and XFA Button y attribute object-lifetime issue. Evidence is incomplete for CVSS scoring, fixed versions, exploit availability, and active exploitation in the supplied bundle.
Mitigation direction
- Inventory endpoints for Foxit Reader 9.0.1.1049.
- Review Foxit security bulletins for the vendor-supported upgrade path.
- Upgrade or remove vulnerable Foxit Reader installations.
- Limit exposure to unsolicited PDFs and untrusted links.
- Use least privilege and application controls to reduce execution impact.
Validation and detection
- Confirm installed Foxit Reader versions across managed endpoints.
- Check software inventory for version 9.0.1.1049 specifically.
- Review EDR telemetry for suspicious Foxit Reader child processes.
- Verify that remediated systems no longer run the affected version.
- Document any exception where Foxit cannot be upgraded or removed.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-416: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-9954 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://zerodayinitiative.com/advisories/ZDI-18-338CVE reference · x_refsource_MISC
- https://www.foxitsoftware.com/support/security-bulletins.phpCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.