Security readout for executives and security teams
Plain-English summary
CVE-2018-9949 is a remote code execution flaw in Foxit Reader 9.0.0.29935. A user would need to open a malicious file or visit a malicious page. If exploited, attacker code could run with the same permissions as the user running Foxit Reader.
Executive priority
Treat this as a high-priority legacy desktop exposure if Foxit Reader 9.0.0.29935 exists in the environment. The business risk is user-driven compromise through malicious documents or web content, not remote unauthenticated server takeover.
Technical view
The flaw is a heap-based buffer overflow in Foxit Reader TIFF parsing. The issue is improper validation of user-supplied length data before copying into a fixed-length heap buffer, mapped to CWE-122. The source identifies ZDI-CAN-5473 and affected version 9.0.0.29935.
Likely exposure
Exposure is limited to systems running Foxit Reader 9.0.0.29935 where users can open attacker-supplied files or browse malicious pages. Desktop fleets with Foxit Reader, email attachments, web downloads, or unmanaged document workflows are the likely concern.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires user interaction, but successful exploitation can execute code in the current process context, making phishing or malicious document delivery the plausible risk path.
Researcher notes
Evidence supports a TIFF parser heap buffer overflow causing potential code execution. The bundle does not provide CVSS, a named fixed version, proof of active exploitation, or detailed patch notes. Avoid assuming broader Foxit versions are affected without vendor confirmation.
Mitigation direction
- Inventory endpoints for Foxit Reader 9.0.0.29935.
- Check Foxit security bulletins for the vendor-approved fixed release.
- Update or retire affected Foxit Reader installations.
- Limit handling of untrusted TIFF or document files on vulnerable systems.
- Use endpoint controls to reduce execution impact from document readers.
Validation and detection
- Confirm no managed endpoints report Foxit Reader 9.0.0.29935.
- Verify deployed Foxit versions against Foxit security bulletin guidance.
- Review endpoint telemetry for unexpected Foxit Reader child processes.
- Check email and web controls for malicious attachment filtering.
- Document remaining exceptions and compensating controls.
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-2018-9949 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-18-333CVE 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.
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.