Security readout for executives and security teams
Plain-English summary
CVE-2021-31214 is a high-severity remote code execution issue in Microsoft Visual Studio Code. The available source bundle says successful exploitation could let an attacker impact confidentiality, integrity, and availability, but it requires user interaction and local attack conditions.
Executive priority
Treat as a high-priority workstation patching issue, especially for engineering teams. Business urgency is meaningful, but current sources do not support emergency active-exploitation handling.
Technical view
The CVSS 3.1 vector is 7.8: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Sources identify Microsoft Visual Studio Code as affected. No CWE detail or exploit mechanics are provided in the bundle.
Likely exposure
Exposure is most likely on developer workstations or systems where affected Visual Studio Code builds are installed. The bundle’s version detail is limited, so confirm against Microsoft’s advisory and local software inventory.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. CVSS marks exploit maturity as unproven and indicates exploitation requires user interaction under local attack conditions.
Researcher notes
Public bundle details are sparse: no CWE, no exploit description, and no confirmed exploitation. Focus validation on version exposure, user-interaction paths, and whether Microsoft’s official remediation has been applied.
Mitigation direction
- Review Microsoft’s advisory for affected and fixed Visual Studio Code versions.
- Update Visual Studio Code using Microsoft-supported update channels.
- Prioritize developer and admin workstations with VS Code installed.
- Avoid opening untrusted workspaces or files until patch status is confirmed.
Validation and detection
- Inventory installed Visual Studio Code versions across managed endpoints.
- Compare discovered versions with Microsoft’s CVE-2021-31214 advisory.
- Confirm update deployment through endpoint management or software inventory records.
- Check whether high-privilege users run affected VS Code installations.
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-2021-31214 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
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/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:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/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-2021-31214CVE 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.