Security readout for executives and security teams
Plain-English summary
CVE-2021-31944 is a Microsoft 3D Viewer information disclosure issue. The main business risk is unintended exposure of sensitive information from affected workstations, not system takeover. The provided data rates it medium severity because exploitation requires local access, user interaction, and low privileges.
Executive priority
Treat as a routine endpoint remediation item, not an emergency. Prioritize systems handling sensitive data or users likely to open external 3D content.
Technical view
The source bundle identifies Microsoft 3D Viewer 7.0.0 as affected. CVSS 3.1 is 5.0 with local attack vector, low complexity, low privileges, required user interaction, unchanged scope, high confidentiality impact, and no integrity or availability impact.
Likely exposure
Exposure is most likely on Windows endpoints where Microsoft 3D Viewer 7.0.0 is installed and users can interact with content handled by that application.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. CVSS exploit maturity is marked unproven, and exploitation requires user interaction.
Researcher notes
Evidence is limited to the CVE/MSRC metadata in the bundle. Do not infer remote exploitation, code execution, or active exploitation from this record.
Mitigation direction
- Check Microsoft MSRC guidance for the official remediation path.
- Update Microsoft 3D Viewer through approved Microsoft update channels.
- Remove 3D Viewer where it is not needed for business workflows.
- Limit handling of untrusted 3D Viewer content until remediation is confirmed.
Validation and detection
- Inventory endpoints for Microsoft 3D Viewer version 7.0.0.
- Confirm remediated systems no longer report the affected version.
- Review MSRC advisory status for vendor-specific update details.
- Document exceptions where the application must remain installed.
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-2021-31944 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
- Medium
- CVSS
- 5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
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:H/I:N/A:N/E:U/RL:O/RC:C1.33.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31944CVE 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.