Security readout for executives and security teams
Plain-English summary
This flaw affects older Foxit desktop PDF products and can allow arbitrary code execution through mishandled JavaScript. For executives, the concern is endpoint compromise when users handle unsafe PDFs. The source bundle does not provide CVSS scoring or confirm exploitation in the wild.
Executive priority
Treat this as a high-priority endpoint remediation item if affected Foxit versions are present. The business risk is code execution through document handling, but urgency should be based on confirmed asset exposure because active exploitation is not evidenced here.
Technical view
CVE-2021-41782 is described as a use-after-free in Foxit PDF Reader before 11.1, PDF Editor before 11.1, and PhantomPDF before 10.1.6. JavaScript handling is the stated root cause, with arbitrary code execution as the impact. No CWE, CVSS vector, or detailed patch analysis is included.
Likely exposure
Organizations are exposed where users still run Foxit PDF Reader or PDF Editor before 11.1, or PhantomPDF before 10.1.6. Exposure is most relevant on endpoints that open untrusted or externally supplied PDF files.
Exploitation context
The provided sources do not confirm active exploitation, and the CVE is not marked as CISA KEV in the bundle. The vulnerability class and impact are serious, but exploitability details are incomplete in the supplied evidence.
Researcher notes
The public bundle is sparse: no CVSS, CWE, affected CPEs, or exploit telemetry are provided. Analysis should stay anchored to the stated affected versions and JavaScript use-after-free condition. Avoid assuming browser, server, or non-Foxit impact.
Mitigation direction
- Upgrade Foxit PDF Reader and PDF Editor to version 11.1 or later.
- Upgrade PhantomPDF to version 10.1.6 or later.
- Check Foxit security bulletins for product-specific guidance.
- Prioritize endpoints that handle external PDFs or email attachments.
- Reduce use of affected Foxit versions until upgraded.
Validation and detection
- Inventory installed Foxit PDF Reader, PDF Editor, and PhantomPDF versions.
- Confirm no endpoint runs affected versions listed in the CVE description.
- Review vulnerability scanner results for CVE-2021-41782 matches.
- Verify software deployment records show upgraded Foxit builds.
- Check Foxit guidance for any additional vendor-recommended 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.
Execution 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-2021-41782 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.foxit.com/support/security-bulletins.htmlCVE 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.