Security readout for executives and security teams
Plain-English summary
CVE-2021-1715 is a high-severity Microsoft Word remote code execution vulnerability. Successful exploitation could let an attacker run code after a user interacts with malicious content. The provided sources show official Microsoft remediation exists, but do not describe the exploit technique.
Executive priority
Treat as a high-priority patching issue, especially in environments with heavy Office document exchange or SharePoint document workflows. The urgency is real because impact is high, but the provided evidence does not support claims of known active exploitation.
Technical view
The source bundle lists CVSS 3.1 score 7.8 with local attack vector, low complexity, no privileges required, and user interaction required. Impact is high for confidentiality, integrity, and availability. Affected products include Word, Office, Microsoft 365 Apps, SharePoint Server, Office Online Server, and Office Web Apps versions listed by Microsoft.
Likely exposure
Exposure is likely where listed Microsoft Word or Office versions are installed, or where SharePoint and Office web rendering services process Office documents. Highest concern is users or services that open, preview, upload, or handle untrusted Word content.
Exploitation context
The provided sources do not show active exploitation. The bundle marks KEV as false and CVSS exploit maturity as unproven. User interaction is required, so phishing or document-handling workflows are the most relevant business exposure context.
Researcher notes
The source bundle lacks root-cause details, exploit primitives, or product-specific fixed build numbers. Research should stay focused on affected-product confirmation, patch verification, and whether document-processing paths expose vulnerable Office components.
Mitigation direction
- Apply the official Microsoft updates referenced in the MSRC advisory.
- Inventory affected Office, Word, SharePoint, Office Online, and Office Web Apps deployments.
- Prioritize systems that handle external or untrusted Office documents.
- Check Microsoft guidance for any product-specific prerequisites or exceptions.
- Keep user-facing document workflows under heightened monitoring until patched.
Validation and detection
- Compare installed product versions against the affected list in Microsoft guidance.
- Confirm patch deployment status through enterprise update or asset management tooling.
- Review SharePoint and Office server inventories for listed affected versions.
- Validate endpoints running Word or Office 2010, 2013, 2016, 2019, or Microsoft 365 Apps.
- Document any systems deferred from patching and assign remediation owners.
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-2021-1715 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
- Microsoft Word Remote Code Execution VulnerabilityCVE reference · vendor-advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1715CVE reference · x_refsource_MISC, x_transferred
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.