Security readout for executives and security teams
Plain-English summary
CVE-2018-9974 is a remote code execution flaw in Foxit Reader 9.0.1.1049. A victim must open a malicious file or visit a malicious page. If successful, the attacker can run code inside the Foxit Reader process, making vulnerable desktops a realistic entry point.
Executive priority
Prioritize as a high-risk workstation issue if Foxit Reader 9.0.1.1049 exists in the environment. Business urgency depends on deployment scope and user exposure to untrusted documents or web content.
Technical view
The flaw is in ConvertToPDF_x86.dll and is described as improper validation of user-supplied length before copying into a heap buffer. It maps to CWE-122. ZDI tracked it as ZDI-CAN-5895 and published advisory ZDI-18-358. No CVSS score is provided in the bundle.
Likely exposure
Exposure appears limited to installations of Foxit Reader 9.0.1.1049. Risk is highest where users handle untrusted documents, web content, or attachments using that version. The provided sources do not identify other affected products or versions.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires user interaction through a malicious page or file. The impact is serious because successful exploitation can execute attacker-controlled code in the current process context.
Researcher notes
Evidence supports a heap-based buffer overflow in ConvertToPDF_x86.dll with remote code execution potential. The bundle lacks CVSS, proof of active exploitation, and explicit fixed-version details. Keep affected-version claims narrow to Foxit Reader 9.0.1.1049.
Mitigation direction
- Inventory endpoints for Foxit Reader 9.0.1.1049.
- Follow Foxit security bulletin guidance for the affected release.
- Upgrade or replace the vulnerable version where vendor guidance supports it.
- Reduce exposure to untrusted files and links for affected users.
- Prioritize removal from high-risk document-handling workstations.
Validation and detection
- Confirm installed Foxit Reader versions on managed endpoints.
- Map findings specifically to Foxit Reader 9.0.1.1049.
- Review Foxit and ZDI references for fixed-version guidance.
- Check endpoint telemetry for suspicious Foxit Reader process behavior.
- Avoid testing with untrusted files on production systems.
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-122: 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-2018-9974 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-18-358CVE 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.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.