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CVE Record

CVE-2020-17119: Microsoft Outlook Information Disclosure Vulnerability

Microsoft Outlook Information Disclosure Vulnerability

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2020-17119 is a Microsoft Outlook information disclosure vulnerability. The main business risk is exposure of sensitive information from users running affected Outlook or Office versions. It requires user interaction, which lowers urgency compared with wormable flaws, but confidentiality impact is high.

Executive priority

Treat this as a confidentiality-focused patching item. It is not KEV-listed in the bundle, but affected Office endpoints should be remediated through normal vulnerability management timelines.

Technical view

The provided CVSS vector is AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N, scoring 6.5. A remote, unauthenticated attacker path is indicated, but user interaction is required. Microsoft lists an official remediation, and the record is confirmed. No CWE detail is provided in the bundle.

Likely exposure

Organizations using affected Microsoft Outlook, Office 2019, Office 2019 for Mac, or Microsoft 365 Apps for Enterprise builds may be exposed, especially unmanaged endpoints or legacy Office installations.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation. The CVSS temporal metric includes E:P, suggesting proof-of-concept maturity, but no exploit details are provided.

Researcher notes

Evidence is limited to CVE/MSRC metadata. The bundle confirms affected products, CVSS characteristics, official remediation availability, and no KEV signal. It does not describe root cause, vulnerable code paths, or precise exploitation mechanics.

Mitigation direction

  • Apply Microsoft’s official update for CVE-2020-17119 from MSRC.
  • Prioritize legacy Outlook 2010, 2013, 2016, Office 2019, and Microsoft 365 Apps endpoints.
  • Check Microsoft guidance for exact fixed builds and superseding updates.
  • Use endpoint inventory to confirm vulnerable Office builds are no longer present.

Validation and detection

  • Inventory Outlook and Office versions against the affected products listed by Microsoft.
  • Confirm installed updates include or supersede the CVE-2020-17119 fix.
  • Review unmanaged, Mac, and legacy Office endpoints separately.
  • Verify vulnerability scanners identify the CVE as remediated after patching.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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.

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CVE-2020-17119 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C

Official CVE source material

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.

1CVSS vectors
3Timeline events
1ADP providers
3Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
6.5CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C2.83.6microsoft

Vulnerability scoring details

Base CVSS 3.1 score

6.5Medium
CVSS 3.1 vector shape for CVE-2020-17119Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
MicrosoftMicrosoft 365 Apps for Enterprise16.0.1Listed
MicrosoftMicrosoft Office 201919.0.0Listed
MicrosoftMicrosoft Office 2019 for Mac16.0.0Listed
MicrosoftMicrosoft Outlook 2010 Service Pack 213.0.0.0Listed
MicrosoftMicrosoft Outlook 2013 Service Pack 115.0.0.0Listed
MicrosoftMicrosoft Outlook 201616.0.0.0Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.