Security readout for executives and security teams
Plain-English summary
CVE-2020-16232 is a low-severity Yokogawa WideField3 issue. A logged-in user could trigger a buffer overflow by opening a malicious project file. The stated impact is limited availability loss, not data theft or integrity change. It matters most where WideField3 supports operational technology workflows.
Executive priority
Handle through normal OT vulnerability management unless WideField3 is widely used or exposed to untrusted project files. Prioritize inventory, vendor guidance review, and controlled remediation planning over emergency response.
Technical view
WideField3 R1.01 through R4.03 is described as affected by a buffer copy weakness without input-size checking, mapped to CWE-120. The CVSS v3.1 vector is local, low complexity, low privileges, and user interaction required, with low availability impact only.
Likely exposure
Exposure is likely limited to environments running Yokogawa WideField3 R1.01 through R4.03 where users can load project files. Systems isolated from untrusted project files have lower practical exposure.
Exploitation context
The provided sources do not indicate active exploitation, public weaponization, or KEV listing. Exploitation requires local access, low privileges, and user interaction through loading a maliciously crafted project file.
Researcher notes
Evidence supports a local file-parsing buffer overflow with low availability impact. The bundle does not provide crash behavior, fixed version details, exploit maturity, or detailed Yokogawa workaround text, so remediation should defer to the cited advisories.
Mitigation direction
- Inventory WideField3 installations and identify versions R1.01 through R4.03.
- Check CISA and Yokogawa guidance for vendor-recommended updates or workarounds.
- Avoid opening project files from untrusted or unnecessary sources.
- Restrict WideField3 access to users with an operational need.
- Test any vendor remediation in a controlled OT environment first.
Validation and detection
- Confirm installed WideField3 versions against the affected R1.01 through R4.03 range.
- Review how project files are received, stored, and approved before use.
- Verify only authorized users can launch WideField3 or load project files.
- Check whether vendor guidance has been reviewed and tracked internally.
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-120: 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 lookupCVE-2020-16232 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
- 2.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
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:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L1.31.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
2.8LowVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsa-20-273-02CVE reference · x_refsource_CONFIRM
- https://www.yokogawa.com/library/resources/white-papers/yokogawa-security-advisory-report-list/CVE 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.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.