Security readout for executives and security teams
Plain-English summary
CVE-2021-38564 is an out-of-bounds read flaw in Foxit PDF Reader and Foxit PDF Editor versions before 11.0.1. In business terms, systems using older Foxit desktop software may be exposed when handling crafted PDF content. The provided sources do not include a CVSS score, impact rating, or confirmed exploitation.
Executive priority
Handle this as a routine endpoint remediation item unless local exposure is high. The main urgency is removing outdated PDF software from managed devices; the provided evidence does not justify emergency response language.
Technical view
The CVE record describes an out-of-bounds read reachable through util.scand in Foxit PDF Reader before 11.0.1 and PDF Editor before 11.0.1. The source bundle does not provide CWE mapping, CVSS metrics, proof-of-concept status, or detailed crash/disclosure impact. Treat validation as version-based unless vendor guidance provides deeper indicators.
Likely exposure
Exposure is limited to environments running Foxit PDF Reader or Foxit PDF Editor versions earlier than 11.0.1. The most relevant assets are user workstations, VDI images, and managed endpoints where Foxit is installed and used to open PDF files.
Exploitation context
The source bundle does not show CISA KEV listing or any cited confirmation of active exploitation. It also does not describe exploitation prerequisites beyond the vulnerable util.scand behavior in affected Foxit products.
Researcher notes
Evidence is sparse. The CVE identifies util.scand and affected versions, but omits CVSS, CWE, advisory details, exploitability notes, and observable indicators. Avoid assuming code execution, data disclosure scope, or exploitation in the wild without additional vendor or threat-intelligence confirmation.
Mitigation direction
- Upgrade Foxit PDF Reader and PDF Editor to 11.0.1 or later.
- Check Foxit security bulletins for any product-specific remediation notes.
- Prioritize managed endpoints that routinely process external PDF files.
- Limit use of affected Foxit versions until upgrades are complete.
Validation and detection
- Inventory installed Foxit Reader and PDF Editor versions across endpoints.
- Flag any Foxit Reader or PDF Editor installation below 11.0.1.
- Confirm updated systems report version 11.0.1 or later.
- Review software deployment records for incomplete or failed updates.
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.
CVE-2021-38564 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_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.