Security readout for executives and security teams
Plain-English summary
CVE-2018-9965 is a remote code execution flaw in Foxit Reader 9.0.1.1049. An attacker would need a user to open a malicious file or visit a malicious page. Successful exploitation could run code as the affected user, making exposed endpoint installs a priority to find and remove.
Executive priority
Treat this as a targeted endpoint cleanup issue with high impact if the vulnerable version remains deployed. Business urgency depends on whether Foxit Reader 9.0.1.1049 is still present in the estate.
Technical view
The flaw is in Foxit Reader handling of the setAction method of Link objects. The source describes missing validation of an object before operations on it, mapped to CWE-416. Exploitation can allow arbitrary code execution in the current process context. The bundle does not provide CVSS scoring or detailed fixed-version data.
Likely exposure
Exposure is most likely on endpoints still running Foxit Reader 9.0.1.1049, especially systems that handle PDFs from email, downloads, web pages, or external parties.
Exploitation context
The source bundle does not indicate known active exploitation, and CISA KEV status is false. Exploitation is remote but requires user interaction: opening a malicious file or visiting a malicious page.
Researcher notes
Evidence is limited to the CVE description and ZDI/Foxit references in the bundle. No CVSS vector, exploit-in-the-wild confirmation, or fixed-version detail is provided here. Avoid assuming broader Foxit versions are affected without vendor confirmation.
Mitigation direction
- Inventory endpoints for Foxit Reader 9.0.1.1049.
- Review Foxit security bulletins for vendor-confirmed remediation guidance.
- Upgrade or replace affected Foxit Reader installs per vendor guidance.
- Reduce handling of untrusted PDFs on affected systems until remediated.
- Prioritize users who receive external documents or web-delivered PDFs.
Validation and detection
- Confirm Foxit Reader version on managed endpoints.
- Check software inventory for version 9.0.1.1049 specifically.
- Verify remediation against Foxit’s security bulletin guidance.
- Review endpoint alerts involving suspicious PDF activity where this version exists.
- Document any remaining business dependency on the affected version.
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-2018-9965 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://www.foxitsoftware.com/support/security-bulletins.phpCVE reference · x_refsource_CONFIRM
- https://zerodayinitiative.com/advisories/ZDI-18-349CVE reference · x_refsource_MISC
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.