Security readout for executives and security teams
Plain-English summary
Microsoft rated this as a high-severity remote code execution issue in Intune Management Extension. If an affected deployment is reachable in the relevant way, successful exploitation could compromise confidentiality, integrity, and availability. The provided sources do not show active exploitation.
Executive priority
Treat as a high-priority patch and inventory item for Intune-managed environments. There is no supplied evidence of active exploitation, but the potential business impact is severe if affected systems remain unremediated.
Technical view
CVE-2021-31980 affects Microsoft Intune Management Extension version 1.0.0.0. CVSS 3.1 is 8.1 with network attack vector, high attack complexity, no privileges, no user interaction, unchanged scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely in organizations that deployed Microsoft Intune Management Extension version 1.0.0.0. The source bundle does not identify other affected versions or detailed deployment conditions.
Exploitation context
The CVSS metadata marks exploit maturity as unproven, and the CVE is not listed as KEV in the supplied bundle. Active exploitation is not evidenced here. High attack complexity suggests exploitation may require specific conditions, but impact remains serious.
Researcher notes
The bundle is sparse: no CWE, root cause, exploit prerequisites, or patch package details are provided. Analysis should stay anchored to MSRC for exact affected configuration and remediation specifics.
Mitigation direction
- Review Microsoft MSRC advisory CVE-2021-31980 for vendor remediation guidance.
- Inventory Intune Management Extension installations and identify version 1.0.0.0.
- Apply Microsoft-supported updates or replacement guidance where applicable.
- Prioritize remediation on high-value or internet-exposed managed environments.
- Track exceptions until Microsoft guidance is applied or exposure is disproven.
Validation and detection
- Confirm whether Intune Management Extension version 1.0.0.0 exists in device inventory.
- Compare installed versions against the Microsoft MSRC advisory.
- Verify updated systems no longer report the affected version.
- Review vulnerability scanner results for CVE-2021-31980 coverage.
- Document any systems where applicability cannot be confirmed.
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-2021-31980 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
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/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:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C2.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/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-2021-31980CVE 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.