Security readout for executives and security teams
Plain-English summary
CVE-2020-17063 is a Microsoft Office Online spoofing issue. The main business risk is user deception that could affect confidentiality and integrity, but exploitation requires user interaction and high attack complexity. The provided sources do not show active exploitation.
Executive priority
Treat as a planned security update priority, not an emergency based on the provided evidence. Prioritize exposed business units using affected Microsoft Office products.
Technical view
The CVSS 3.1 vector is AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N, scoring 6.8. Affected entries in the bundle are Microsoft Office 2019 19.0.0 and Microsoft 365 Apps for Enterprise 16.0.1. No CWE detail is provided.
Likely exposure
Exposure is most likely in organizations with the listed Microsoft Office 2019 or Microsoft 365 Apps for Enterprise versions. The source bundle does not prove broader Office version exposure.
Exploitation context
The bundle marks KEV as false and provides no cited evidence of active exploitation. CVSS indicates network attackability, no required privileges, required user interaction, and high attack complexity.
Researcher notes
Evidence is sparse: no CWE is listed, and only Microsoft advisory and CVE records are cited. Avoid assuming exploit mechanics beyond spoofing, user interaction, and CVSS impact attributes.
Mitigation direction
- Review Microsoft MSRC guidance for CVE-2020-17063.
- Apply applicable Microsoft Office or Microsoft 365 Apps security updates.
- Prioritize systems matching the listed affected product versions.
- Use normal phishing and document-handling controls while remediation is pending.
Validation and detection
- Inventory Office 2019 and Microsoft 365 Apps for Enterprise installations.
- Compare installed versions against Microsoft advisory guidance.
- Confirm update deployment through endpoint management reporting.
- Document exceptions where affected versions 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-2020-17063 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
- 6.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/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:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C1.65.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.8MediumVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/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-2020-17063CVE 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.