Security readout for executives and security teams
Plain-English summary
CVE-2021-31469 affects Foxit Reader 10.1.1.37576. A crafted PDF or malicious page could cause sensitive information disclosure after user interaction. The public record rates it low severity, but notes it may support code execution when chained with other flaws.
Executive priority
Treat as a targeted endpoint hygiene issue, not a broad emergency. Prioritize remediation where Foxit Reader is used by executives, finance, legal, or other users likely to receive untrusted PDFs.
Technical view
The flaw is a CWE-125 out-of-bounds read in handling U3D objects embedded in PDF files. Improper validation of user-supplied data can read past an allocated object. CVSS 3.0 is 3.3 with local attack vector, low complexity, no privileges, and required user interaction.
Likely exposure
Exposure is limited to environments running Foxit Reader 10.1.1.37576, especially endpoints where users open external PDFs or PDFs from web pages. The supplied sources do not identify other affected Foxit products or versions.
Exploitation context
Exploitation requires the victim to open a malicious file or visit a malicious page. The CVE is not listed as KEV in the supplied bundle, and no cited source states active exploitation.
Researcher notes
The key constraint is user interaction. The record describes information disclosure and potential chaining with other vulnerabilities, but the supplied evidence does not document a standalone code execution path, exploit maturity, or specific fixed version.
Mitigation direction
- Check Foxit security bulletin guidance for the affected Reader release and approved upgrade path.
- Upgrade or remove Foxit Reader 10.1.1.37576 where present.
- Reduce exposure to untrusted PDFs and browser-delivered PDF content until remediation is complete.
- Use endpoint controls to limit risky PDF sources for high-value users.
Validation and detection
- Inventory endpoints for Foxit Reader 10.1.1.37576.
- Confirm whether users can open externally sourced PDFs with affected Reader installs.
- Verify remediation against Foxit vendor guidance after updates are applied.
- Review security tooling for detections involving suspicious PDF handling or Reader crashes.
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-125: 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-2021-31469 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
- Low
- CVSS
- 3.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N1.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
3.3LowVector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.foxitsoftware.com/support/security-bulletins.phpCVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-21-526/CVE 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.