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TI-2020-12859 Aliases CVE-2020-16855GHSA-gwjj-xwgr-2v6f

Microsoft Office Information Disclosure Vulnerability

Priority LOW 32CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

<p>An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory. An attacker who successfully exploited the vulnerability could view out of bound memory.</p> <p>Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Office software.</p> <p>The security update addresses the vulnerability by properly initializing the affected variable.</p>

Why it matters now

EPSS 0.04425 91st percentileScored 2026-11-07
Fix Fixed Microsoft Office 2019 for Mac (Microsoft): publicationMicrosoft Office 2016 for Mac (Microsoft): publication

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Office 2019 for Mac16.0.0 to before publicationpublicationPatch availableCNA
MicrosoftMicrosoft Office 2016 for Mac16.0.0 to before publicationpublicationPatch availableCNA
  • Microsoft Office 2019 for Mac VendorMicrosoft Affected 16.0.0 to before publication Fixed in publication Patch available CNA
  • Microsoft Office 2016 for Mac VendorMicrosoft Affected 16.0.0 to before publication Fixed in publication Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:office:2016:*:*:*:*:macos:*:*2016VulnerableMicrosoft
cpe:2.3:a:microsoft:office:2019:*:*:*:*:macos:*:*2019VulnerableMicrosoft
  • cpe:2.3:a:microsoft:office:2016:*:*:*:*:macos:*:* Versions 2016 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office:2019:*:*:*:*:macos:*:* Versions 2019 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft Office 2019 for Mac (Microsoft) Fixed in publication
  • Fix · CNA Microsoft Office 2016 for Mac (Microsoft) Fixed in publication

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-16855
  2. 2026-10-03 Alias added: GHSA-gwjj-xwgr-2v6f

References

Patch 1

  • TI-2023-09240 Microsoft Outlook Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-01013 A remote code execution vulnerability exists in Microsoft Excel software when the… KEVCVSS 3.1HIGH 8.8
  • TI-2019-00335 Command injection in Microsoft Office KEVCVSS 3.1HIGH 8.8
  • TI-2018-00739 Out-of-bounds write in Microsoft Equation Editor KEVCVSS 3.1HIGH 8.8
  • TI-2015-02130 Microsoft PowerPoint 2007 SP3, Word 2007 SP3, PowerPoint 2010 SP2, Word 2010 SP2… KEVCVSS 3.1HIGH 8.8
  • TI-2015-01588 Microsoft Office 2013 SP1 and 2013 RT SP1 allows remote attackers to execute arbitrary… KEVCVSS 3.1HIGH 8.8
See all 1024 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences