Security readout for executives and security teams
Plain-English summary
CVE-2020-17094 is a Microsoft Windows Error Reporting information disclosure issue. It does not allow remote code execution by itself, but a local low-privileged user could expose sensitive information. Microsoft lists official remediation, so patch compliance is the main business action.
Executive priority
Treat this as a moderate patching priority. It is not documented as actively exploited and requires local access, but confidentiality impact is high. Include it in Windows security update compliance, especially for shared endpoints and servers.
Technical view
The CVSS 3.1 vector is AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, scoring 5.5. The issue affects multiple Windows 10 and Windows Server releases. The bundle provides no CWE or root-cause detail, but confirms high confidentiality impact and an official vendor fix.
Likely exposure
Exposure is likely on unpatched Windows 10 versions 1803, 1809, 1903, 1909, 2004, 20H2, and related Windows Server 2019, 1903, 1909, 2004, and 20H2 deployments listed by Microsoft.
Exploitation context
The provided sources do not show active exploitation, and this CVE is not marked KEV. Exploitation requires local access and low privileges, so risk is higher on shared workstations, multi-user servers, or environments where attackers may already have a foothold.
Researcher notes
Public detail is sparse. The bundle confirms affected platforms, CVSS, official fix availability, and no KEV listing, but does not describe the precise Windows Error Reporting flaw, data exposed, or proof-of-concept status. Avoid assumptions beyond local low-privilege information disclosure.
Mitigation direction
- Apply the Microsoft security update referenced by MSRC for CVE-2020-17094.
- Prioritize shared Windows systems and servers where local users or services are less trusted.
- Confirm unsupported Windows versions are retired or covered by applicable Microsoft servicing guidance.
- Track remediation through normal Windows Update, WSUS, Intune, or endpoint management reporting.
Validation and detection
- Inventory Windows assets against the affected versions listed in the CVE bundle.
- Verify the relevant Microsoft update is installed on affected systems.
- Review patch compliance reports for exceptions, failed installations, or unmanaged hosts.
- Do not rely on exploit testing; validate by version and update state.
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-2020-17094 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
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C1.83.6microsoftVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Windows Error Reporting Information Disclosure VulnerabilityCVE reference, microsoft · vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17094CVE reference, CVE · 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.